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284 Cards in this Set
- Front
- Back
An organ contains |
two or more tissues grouped together that function together |
|
The human integumentary system includes |
skin, nails, hair follicles, and glands. |
|
Nerve fibers scattered throughout the dermis are associated with |
muscles, glands, and sensory receptors. |
|
Which of the following is not correct concerning the skin? |
The subcutaneous layer is between the dermis and the epidermis. |
|
As cells are pushed from the deeper part of the epidermis toward the surface |
they die. |
|
The skin |
retards water loss from deeper tissues, excretes wastes, regulates body temperature, synthesizes vitamin D |
|
The major blood vessels that supply skin cells are found in the |
subcutaneous layer. |
|
Skin cancer cells are most likely to develop from |
nonpigmented epithelial cells |
|
Which of the following is not a method for helping prevent pressure ulcer formation? |
Maintaining one body position |
|
The main function of melanocytes is to |
produce melanin. |
|
Epidermal cells are supplied with nutrients from blood vessels located in the |
subcutaneous layer. |
|
Pressure ulcers are usually associated with skin overlying |
bony projections. |
|
Cutaneous carcinomas are most commonly caused by exposure to |
ultraviolet light. |
|
Which of the following is a characteristic of the person most likely to develop a cutaneous carcinoma? |
Over forty years of age, Often works outdoors, Light-complexioned skin, Often plays outdoors |
|
The most common cause of cutaneous melanoma is |
relatively short exposure to high intensity sunlight. |
|
Injections that are administered into the tissues of the skin are called |
intradermal |
|
Skin cells play an important role in the production of vitamin |
D |
|
Exposure to ultraviolet light darkens the skin by stimulating production of |
melanin |
|
The shaft of a hair is composed of |
dead epidermal cells. |
|
A nail consists of a |
. nail bed and nail plate. |
|
Eccrine sweat glands |
respond primarily to elevated body temperature. |
|
Acne is a disorder involving the |
sebaceous glands |
|
The regulation of body temperature is of vital importance because |
slight shifts in temperature can disrupt the rates of metabolic reactions |
|
Which of the following is a normal response to excess loss of body heat in a cold environment? |
Dermal blood vessels constrict, Sweat glands become inactive, Skeletal muscles contract involuntarily, Less blood flows to dermal vessels, |
|
The granulations that appear during the healing of a large, open wound are composed mainly of |
fibroblasts surrounding blood vessels. |
|
Which of the following increase the risk of developing osteoporosis? |
Low intake of dietary calcium Lack of physical exercise Smoking Low intake of vitamin D |
|
An osteocyte is a _______ |
bone cell surrounded by matrix. |
|
The microscopic bony chambers that house mature bone cells are called _______ |
lacunae. |
|
The salts that are abundant in the extracellular matrix of bone tissue consist largely of _______ |
calcium phosphate. |
|
Which of the following is NOT a step in the formation of endochondral bone? |
Hyaline cartilage changes to adipose tissue. |
|
Bone that develops within sheetlike layers of connective tissue is called _______ |
intramembranous bone. |
|
Red bone marrow functions in the formation of _______ |
red and white blood cells and platelets. |
|
The cells responsible for removing excess bone tissue after the fracture repair process are _______ |
osteoclasts. |
|
Which of the following bones is NOT included within the lower limb? |
Ulna |
|
Which of the following is NOT included in the appendicular skeleton? |
Vertebral column |
|
Which of the following is included in the pectoral girdle? |
Sternum |
|
The zygomatic arch is composed of processes of the _______ |
zygomatic and temporal bones. |
|
Which of the following is part of the facial skeleton? |
Maxillary bone |
|
A cleft palate results from incomplete development of the _______ |
maxillae |
|
Cervical vertebrae can be distinguished from other types by the presence of |
transverse foramina. |
|
Which of the following bones has an acromion process? |
Scapula |
|
A hip bone includes a (an) _______ |
ilium. ischium. pubis. . acetabulum. |
|
The joints between the vertebrae of the backbone are best described as _______ |
slightly movable. |
|
The degenerative joint disease osteoarthritis may develop as a result of damage to the _______ |
articular cartilage. |
|
A bone includes _______ |
bone tissue. blood. dense connective tissue. cartilage. |
|
Which of the following is not a function of bone? |
To provide nervous communication from bone to muscle |
|
The zygomatic bone is an example of a (an) _______ |
irregular bone. |
|
Articular cartilage is _______ |
hyaline cartilage. |
|
The presence of an epiphyseal plate indicates that _______ |
the bone is lengthening. |
|
Sinuses are found within all of the following bones except the _______ |
zygomatic bones. |
|
Which of the following describes the female pelvis compared to that of the male? |
The distance between the female ischial spines is greater. |
|
The femur _______ |
is the longest bone in the body. extends from the hip to the knee. has a large rounded head. articulates with the patella. |
|
Which of the following terms and descriptions is correctly paired? |
Pronation-turning the hand so the palm is downward or facing posteriorly (in anatomical position) |
|
A sarcomere is best described as _______ |
a unit within a myofibril |
|
Myofibrils are composed primarily of |
actin and myosin |
|
A motor unit typically includes |
one motor neuron and several muscle fibers |
|
The electrical impulse that triggers a contraction travels deep into a skeletal muscle fiber by means of |
transverse tubules |
|
Neurotransmitter molecules are stored in vesicles within |
motor neuron endings |
|
The enzyme acetylcholinesterase causes acetylcholine to |
decompose |
|
Creatine phosphate |
supplies energy for the synthesis of ATP |
|
Binding sites on the surface of actin allow the formation of cross bridges with molecules of |
myosin |
|
The amount of oxygen needed to support the conversion of lactic acid to glucose by the liver is called the |
oxygen debt |
|
A muscle cramp is most likely due to a temporary lack of |
ATP |
|
An example of a partial but sustained contraction of a whole muscle is |
eye blinking |
|
The characteristic reddish brown color of skeletal muscle comes from which substance? |
myoglobin |
|
The threshold stimulus is the |
minimum strength of stimulus required to cause muscle fiber contraction to occur |
|
Rigor mortis that occurs in skeletal muscles a few hours after death is due to |
lack of ATP, increased membrane permeability to calcium ions |
|
The increase in the number of motor units activated as a result of more intense stimulation is called |
recruitment |
|
In a recording of a muscle twitch, the delay between the time a stimulus is applied and the time the muscle responds is called the |
latent period |
|
Activities such as distance swimming and distance running are most likely to stimulate development of |
slow fatigue-resistant muscle fibers |
|
When a muscle undergoes atrophy in response to disuse, |
there is a reduction in capillary networks the number of mitochondria decreases the size of actin and myosin filaments decreases the muscle gets smaller |
|
Multiunit smooth muscle |
responds to stimulation by neurons and certain hormones |
|
The term "muscle" can refer to |
a cell a tissue an organ |
|
Compared to skeletal muscle, smooth muscle |
contracts more slowly and relaxes more slowly |
|
Functions of muscle include |
the heartbeat. muscle tone. production of heat. moving body parts. |
|
The moveable end of a muscle is attached at its |
insertion |
|
The muscle primarily responsible for opposing a particular action is called the |
antagonist |
|
Which of the following is NOT a type of neuroglia? |
Neuron |
|
In the central nervous system myelin is formed by |
Schwann cells. |
|
The cellular processes of neurons that provide receptive surfaces for input from other neurons are |
dendrites |
|
Masses of myelinated nerve fibers appear |
white |
|
Ischemic cell damage is caused by a lack of blood flow, which deprives cells of |
oxygen |
|
An infant's responses to stimuli are coarse and undifferentiated because its nerve fibers |
are not completely myelinated. |
|
Which describes the ion concentrations inside and outside of a neuron? |
The sodium ion concentration is higher on the outside of the cell and potassium ion concentration is higher on the inside of the cell |
|
Which is true of drugs that decrease membrane permeability to sodium ions? |
Some are used as local . They may block nerve impulses from moving along the axon. They may prevent the perception of pain. They work by blocking sodium channels in the cell membrane. |
|
During an action potential, depolarization occurs as a result of |
sodium ions diffusing to the inside of the cell membrane. |
|
During an action potential, repolarization occurs as a result of |
potassium ions diffusing to the outside of the cell membrane. |
|
When a neuron becomes more excitable as a result of incoming subthreshold stimulation, it is said to be |
facilitated |
|
Which of the following lists parts of a reflex arc in the correct sequence? |
Receptor, sensory neuron, motor neuron, effector |
|
Within the meninges, cerebrospinal fluid occupies the |
subarachnoid space. |
|
In the case of a subdural hematoma (blood accumulating beneath the dura) resulting from a blow to the head, blood accumulates between the |
dura mater and arachnoid mater. |
|
The pressure of cerebrospinal fluid is usually measured by introducing a hollow needle between lumbar vertebrae into the |
subarachnoid space. |
|
The spinothalamic tract conducts impulses |
up the spinal cord to the thalamus. |
|
The part of the brain that coordinates voluntary muscle movements is the |
cerebrum |
|
Which of the following is most closely associated with the diencephalon? |
Thalamus |
|
The complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex is the |
reticular formation |
|
The cardiac and vasomotor center are located in the |
medulla oblongata. |
|
The phrenic nerves arise from the |
cervical plexuses. |
|
The respiratory areas are in the pons and in the |
medulla oblongata. |
|
Amphetamines have stimulating effects on the nervous system because they |
. release norepinephrine. |
|
Which of the following are adrenergic fibers? |
Sympathetic postganglionic fibers |
|
Cancer patients often develop endocrine disorders because |
cancer cells sometimes secrete hormones inappropriately. |
|
Steroid hormones produce their effects by |
. activating genes. |
|
Hormone concentrations are regulated by |
levels of substances in the blood only. |
|
The secretion of hormones from the anterior lobe of the pituitary gland is largely controlled by |
releasing hormones from the hypothalamus. |
|
Which of the following is secreted by neurosecretory cells in the posterior lobe of the pituitary gland? |
Antidiuretic hormone |
|
Growth hormone |
promotes the movement of amino acids into cells only. increases the rate of cell division only. increases the rate of fat metabolism only. promotes bone growth only. |
|
Which of the following hormones exerts its effect primarily on the reproductive organs? |
Follicle-stimulating hormone |
|
Diabetes insipidus is caused by |
a lack of ADH. |
|
Growth hormone release is stimulated by |
growth hormone releasing hormone. |
|
Thyroxine |
increases the rate at which proteins are synthesized. |
|
The hormone that decreases the plasma calcium concentration is |
calcitonin |
|
Cretinism is caused by |
hypothyroidism |
|
A person with an abnormally high metabolic rate, who is underweight and who has protruding eyes is exhibiting symptoms of |
hyperthyroidism |
|
The secretion of parathyroid hormone is controlled primarily by the |
plasma calcium concentration. |
|
Parathyroid hormone stimulates |
osteoclast activity. |
|
An example of a hormone secreted by the adrenal medulla is |
epinephrine |
|
Aldosterone promotes the homeostasis of ions by causing the kidneys to |
conserve sodium and excrete potassium. |
|
Cortisol |
stimulates the production of glucose from noncarbohydrates. |
|
The neurons that stimulate secretions from cells of the adrenal medulla are best described as |
sympathetic neurons. |
|
A deficiency of hormones from the adrenal medulla is likely to produce |
None of - high blood pressure. increased heart rate. elevated blood sugar. sodium loss in the urine. |
|
Insulin causes |
a decrease in the concentration of blood glucose. |
|
Diabetes mellitus is characterized by |
glucose in the urine. excess urine production. dehydration. increased thirst. |
|
Type 1 diabetes mellitus is caused by |
a disorder of the immune system. |
|
Treatment of type 2 diabetes mellitus usually includes |
controlling the diet. exercising regularly. maintaining desirable body weight. reducing sugar intake. |
|
Melanocyte-stimulating hormone, which regulates the formation of melanin, is produced by the |
pineal gland. |
|
A person who is experiencing the effects of chronic stress usually has |
increased blood pressure |
|
The cardiovascular system consists of all of the following except |
lungs |
|
The pulmonary circuit |
sends deoxygenated blood to the lungs. |
|
The tissue that forms a loose-fitting sac around the heart is the |
fibrous pericardium. |
|
Which of the following represents the correct sequence of parts through which blood moves from the vena cava to the lungs? |
Right atrium, tricuspid valve, right ventricle, pulmonary valve |
|
The skeleton of the heart consists of |
fibrous connective tissue in the interventricular septum. fibrous connective tissue encircling the heart valves. |
|
The pain of angina pectoris comes from a blockage in an artery that supplies the |
heart. |
|
When the ventricular walls contract, the |
bicuspid and tricuspid valves close. |
|
Which of the following structures consists of self-exciting tissue? |
Sinoatrial node |
|
The correct sequence of parts that function to carry cardiac impulses is |
SA node, AV node, AV bundle, Purkinje fibers. |
|
In an ECG pattern, the P wave is caused by |
depolarization of atrial muscle fibers. |
|
In an ECG pattern, the T wave is caused by |
repolarization of ventricular muscle fibers. |
|
In an ECG pattern, the P-Q interval indicates how long it takes for the cardiac impulse to travel from the |
SA node to the ventricular muscular fibers. |
|
Impulses carried to the heart by means of fibers that secrete acetylcholine are |
parasympathetic impulses and cause the heart rate to decrease. |
|
An abnormally slow heart rate is termed |
bradycardia |
|
The effect on the heart of excess potassium ion concentration usually is |
decreased rate and decreased force of contraction. |
|
Sympathetic branches of the autonomic nervous system stimulate smooth muscle in artery and arteriole walls to |
contract |
|
Which of the following is not a risk factor for atherosclerosis? |
Diet high in unsaturated fats |
|
Which type of blood vessel serves as a blood reservoir? |
Vein |
|
The density of capillaries within a tissue varies directly with the tissue's |
rate of metabolism. |
|
Plasma proteins in blood capillaries help to |
maintain the osmotic pressure of the blood. |
|
Because net inward pressure in venular capillary ends is less than net outward pressure at the arteriolar ends of capillaries |
more fluid leaves the capillaries than returns. |
|
The blood pressure in the systemic arteries is greatest during |
ventricular systole. |
|
Starling's law of the heart holds that the |
greater the length of myocardial fibers, the greater the force with which they contract. |
|
Which of the following helps return blood to the heart? |
Contracting skeletal muscles |
|
Which of the following is not a branch of the aorta? |
Pulmonary artery |
|
Blood from the face and scalp is drained by the |
external jugular vein. |
|
Excess fluid is kept from accumulating in tissue spaces by |
the lymphatic system. |
|
The structure of a lymphatic vessel is most similar to that of a(an) |
vein |
|
The two collecting ducts that drain the lymphatic trunks are |
the thoracic duct and right lymphatic duct. |
|
The formation of lymph increases as a result of |
increasing osmotic pressure in tissue fluid. |
|
The movement of lymph through lymphatic vessels is caused largely by
|
muscular activity. |
|
Stephanie has her cancerous right breast removed, and the surgeon also removes lymph nodes in the axillary region. As a result, Stephanie's right arm |
becomes edematous. |
|
The region of a lymph node through which blood vessels pass is called the |
hilum |
|
Cells in a lymph node that engulf and destroy damaged cells, foreign substances, and cellular debris are |
macrophages |
|
The spleen |
is a blood reservoir. responds to low oxygen concentration. contains many macrophages. resembles a large lymph node divided into nodules. |
|
Interferon is a group of proteins that cells produce in response to |
viruses |
|
The most active phagocytic cells in circulating blood are |
neutrophils and monocytes. |
|
Which of the following is an example of a specific body defense mechanism? |
Immunity |
|
The cells that are primarily responsible for immunity are |
lymphocytes and macrophages. |
|
T lymphocytes are responsible for |
the cellular immune response. |
|
HIV infects |
macrophages |
|
In HIV infection, reverse transcriptase |
makes DNA from viral RNA. |
|
A normal immune response requires |
both T and B cells. |
|
The most abundant type of immunoglobulin is |
IgG |
|
A newborn infant may have some defense against digestive and respiratory disturbances because of IgA obtained from its mother's |
milk |
|
The type of resistance that is a response to contracting an infectious disease is |
naturally acquired active immunity |
|
As a result of an allergen-antibody reaction, |
mast cells release histamine. |
|
In an autoimmune disease, the immune response is directed toward |
cells of the body ("self"). |
|
Which of the following is an autoimmune disease? |
uvenile rheumatoid arthritis Multiple sclerosis Type 1 diabetes mellitus Systemic lupus erythematosus |
|
The digestive system |
mechanically and chemically breaks down food for nutrient absorption. |
|
The alimentary canal extends, in its entirety, from |
the mouth to the anus. |
|
The correct sequence for the layers within the wall of the alimentary canal from inside to outside is |
mucosa, submucosa, muscular layer, serosa. |
|
Peristalsis occurs in the digestive tract |
from the pharynx to the anus. |
|
The uvula is |
a projection of the soft palate. |
|
Because of their location, swollen palatine tonsils may interfere with |
both breathing and swallowing. |
|
The teeth that are best adapted for biting off relatively large pieces of food are the |
incisors |
|
Microorganisms promote the development of dental cavities by metabolizing carbohydrates and releasing by-products that are |
acidic |
|
Salivary amylase digests |
carbohydrates |
|
In the swallowing reflex |
the soft palate, larynx, and hyoid bone are raised. the epiglottis closes off the top of the trachea. the tongue presses against the uvula and soft palate. muscles pull the pharynx upward toward the food. |
|
A hiatal hernia is due to a weakness of the |
diaphragm |
|
The main part of the stomach is called the |
body |
|
The parietal cells of gastric glands secrete |
hydrochloric acid. |
|
Gastrin, which stomach cells secrete |
increases the secretion by the gastric glands. |
|
Which of the following is a protein-splitting enzyme found in pancreatic juice? |
Trypsin |
|
All of the enzymes that digest protein are |
secreted in inactive form. |
|
Acute pancreatitis is often caused by the conversion of |
trypsinogen to trypsin. |
|
The hormone secretin |
stimulates the release of pancreatic fluid. |
|
Cholecystokinin secretion from the intestinal wall is stimulated by the presence of |
proteins and fats in the small intestine. |
|
The liver |
forms glucose from noncarbohydrates. stores vitamin D. destroys damaged red blood cells. forms urea. |
|
Which constituent of bile has a digestive function? |
Bile salts |
|
Jaundice, which is characterized by a yellowish tinge to the tissues, is due to an increased blood concentration of |
bile pigments. |
|
Gallstones are usually composed of |
cholesterol |
|
Severe liver damage would most likely affect digestion of |
lipids |
|
The greater omentum is composed of |
the peritoneal membrane. |
|
The epithelial cells that form the inner lining of the small intestine |
are replaced every few days. |
|
Lactose intolerance is caused by |
deficiency of lactase. |
|
One of the major functions of the large intestine is to |
reabsorb water from chyme. c. regulate the release of bile. |
|
During the defecation reflex, |
the diaphragm lowers. |
|
The American Heart Association recommends that the percentage of calories in a person's diet derived from fats should not exceed |
30%. |
|
Plant proteins typically contain less than adequate amounts of |
essential amino acids. |
|
The results of poor nutrition from lack of nutrients or failure to use them is |
malnutrition |
|
Microorganisms removed from incoming air by sticky airway mucus are most likely to be destroyed by |
the digestive action of gastric juice. |
|
The vocal cords are located within the |
larynx |
|
The walls of the alveoli are composed of |
simple squamous epithelium. |
|
The walls of the nasal cavity are composed of |
ciliated columnar epithelium. |
|
Microorganisms trapped in the mucus of the nasal cavity eventually end up in the |
stomach |
|
Most of the inspired air eventually ends up in the |
alveoli |
|
Laryngitis is potentially dangerous condition because it may cause |
obstruction of the airway. |
|
The condition of newborns called infant respiratory distress syndrome is caused by |
lack of surfactant. |
|
Cancer that originates in the lungs is most likely to develop from |
epithelial cells. |
|
The procedure used to directly examine the trachea and bronchial tree is called |
bronchoscopy |
|
The muscular action that causes air to move into the lungs during inspiration is provided by |
the diaphragm |
|
The force responsible for normal resting expiration is supplied by |
elastic recoil of the lungs. |
|
The amount of air that enters or leaves the lungs during a respiratory cycle is the |
tidal volume. |
|
Which of the following would be most helpful for forceful expiration? |
abdominal wall muscles |
|
The additional volume of air that can be expelled from the lungs at the end of a resting expiration is called |
expiratory reserve volume. |
|
The additional volume of air that can be inhaled at the end of a resting inspiration is called |
inspiratory reserve volume. |
|
The volume of air that can be expelled from completely filled lungs is called |
vital capacity. |
|
The visceral and parietal pleural membranes are normally held together by |
decreased pressure in the pleural cavity. |
|
The condition in which outside air enters the pleural cavity is called |
pneumothorax |
|
Emphysema is characterized by an increase in |
total surface area of the respiratory membrane. alveolar wall elasticity. alveolar capillary networks. |
|
Which of the following is a value that cannot be measured or calculated using a simple spirometer? |
total lung capacity |
|
The respiratory membrane consists of |
two thicknesses of epithelial cells and their basement membranes. |
|
Breathing rate is most likely to increase if the blood level of |
carbon dioxide increases. |
|
The receptors of the inflation reflex are most sensitive to |
stretch |
|
Hyperventilation causes |
a decrease in plasma pCO2. |
|
Gas exchange between the air in the alveoli and the blood in nearby capillaries occurs by the process of |
diffusion |
|
The enzyme carbonic anhydrase speeds the reaction between |
carbon dioxide and water. |
|
Carbaminohemoglobin is formed when hemoglobin bonds |
amino acids. |
|
Which of the following is correct concerning the location of the kidneys? |
They are located behind the parietal peritoneum. |
|
A renal corpuscle includes the |
glomerulus and glomerular capsule. |
|
Which of the following indicates the parts of a renal tubule in the correct sequence from beginning to end? |
proximal convoluted tubule, descending limb of the nephron loop, ascending limb of the nephron loop, distal convoluted tubule |
|
Afferent arterioles are branches of the |
cortical radiate arteries. |
|
Efferent arterioles lead to the |
peritubular capillaries. |
|
Urine formation involves |
glomerular filtration tubular reabsorption tubular secretion |
|
If the arteriole that supplies blood to the glomerulus becomes constricted, |
the glomerular filtration rate decreases. |
|
Reabsorption of glucose occurs primarily through the walls of the |
proximal convoluted tubule. |
|
The reabsorption of sodium under the influence of aldosterone occurs primarily in the |
distal convoluted tubule. |
|
Whenever sodium ions are reabsorbed through the wall of the renal tubule by active transport, the chloride ions are |
reabsorbed passively by electrical attraction. |
|
The hormone ADH functions to promote water reabsorption through the wall of the |
distal convoluted tubule and collecting duct. |
|
The largest quantity of hydrogen ions is secreted |
actively into the proximal convoluted tubule. |
|
Glomerular filtrate is least likely to contain |
plasma proteins. |
|
If a substance is transported from the plasma of the peritubular capillary into the fluid of the renal tubule, it is said to be |
secreted |
|
If a substance is transported from the fluid of the renal tubule into the plasma of the peritubular capillary, it is said to be |
reabsorbed |
|
During a kidney transplant procedure, the renal artery and vein of the donor kidney are connected to the recipient's |
iliac artery and vein. |
|
Gout is a condition in which the plasma has an abnormally high concentration of |
uric acid |
|
Which of the following is an abnormal constituent of urine? |
urea uric acid creatinine water none of these |
|
Kidney stones are least likely to be composed of |
cholesterol |
|
Shock-wave lithotripsy is a procedure for
|
. fragmenting kidney stones. |
|
As a result of excessively low arterial blood pressure, glomerular hydrostatic pressure |
drops and filtration decreases. |
|
The ureters extend downward |
behind the parietal peritoneum and join the urinary bladder from below. |
|
The micturition reflex center is located in the |
sacral portion of the spinal cord. |
|
The effector of the micturition reflex is the |
detrusor muscle. |
|
The stretch receptors of the micturition reflex are in the
|
urinary bladder. |
|
Cystitis occurs more commonly in women than in men because the |
female urethral pathway is shorter. |
|
An automatic bladder is most likely to result from injury to the |
spinal cord above the sacral region. |
|
The male and female reproductive systems |
produce sex cells. transport sex cells to sites of fertilization. secrete hormones for developing secondary sex characteristics. secrete hormones for maintaining secondary sex characteristics. |
|
The cells in the testis that produce male sex hormones are called |
interstitial cells. |
|
Testicular cancer is most likely to originate from |
epithelial cells of seminiferous tubules. |
|
Undifferentiated spermatogenic cells are called |
spermatogonia. |
|
In spermatogenesis, meiosis results in the formation of |
four sperm cells with 23 chromosomes each. |
|
The head of a sperm is mostly |
the nucleus. |
|
The tightly coiled tube that leads to the ductus deferens is the |
epididymis |
|
Androgens are |
male sex hormones. |
|
The hormone responsible for the development and maintenance of male secondary sexual characteristics is |
testosterone. |
|
Meiosis occurs during |
both spermatogenesis and oogenesis. |
|
Which of the following can be fertilized to produce a zygote? |
Secondary oocyte |
|
The movement of an egg cell down a uterine tube is aided by |
both ciliary action and peristaltic contractions. |
|
The tubular portion of the uterus that extends downward into the upper part of the vagina is the |
cervix |
|
The endometrium is the inner layer of the |
uterus |
|
A Pap smear is used to detect abnormal cells in the |
cervix |
|
The female structure that corresponds to the male penis is the |
clitoris |
|
The hormone mainly responsible for the development and maintenance of female secondary sexual characteristics is |
estrogen |
|
In the female reproductive cycle, menstrual flow occurs when the concentrations of |
estrogen and progesterone are low. |
|
Women athletes sometimes experience disturbances in their reproductive cycles because of |
decreased synthesis of estrogens. |
|
Mechanical barriers used in birth control include |
the male condom. the female condom. the diaphragm. a cervical cap. |
|
Symptoms of sexually transmitted infections include all except |
increased sex drive. |