Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
68 Cards in this Set
- Front
- Back
Organs divide into what 2 groups?
|
Alimentary Canal
& Accessory digestive Organs |
|
6 steps to digestion process
|
Ingestion
Propulsion Mechanical digestion chemical digestion Absorption Defection |
|
Where does Ingestion occur?
|
mouth
|
|
What is Propulsion in Digestive Process?
|
movement of food
|
|
What happens during Mechanical digestion is digestion process?
|
prepares food for chemical digestion
|
|
What happens during chemical digestion in the digestive process?
|
complex molecules broken down to chemical components
|
|
What occurs during absorption of the digestive process?
|
transport of digested nutrients
|
|
What occurs during Defection?
|
eliminates indigestible substances as feces
|
|
Function of Peristalsis?
|
involved with propulsion
|
|
What is rythmic contractions of the intestine & its purpose?
|
Segmentation
& to mix food with digestive juices |
|
What are the four layers of Alimentary Canal Wall?
|
The mucosa
The submucosa The muscularis externa The serosa |
|
What is the innermost layer of the Alimentary Canal WAll?
|
The mucosa
|
|
What does the submucosa contain?
|
blood and lymphatic vessels, nerve fibers
|
|
Two layers of te muscularis externa?
|
Circular muscularis (inner layer)
Longitudinal muscularis (outer layer) |
|
What is the outer most layer of the Alimentary Canal WAll?
|
The serosa
|
|
Where is smooth muscle found in the digestive system?
|
primarily found in walls of viscera
|
|
Smooth Muscle is grouped into two sheets?
|
Longitudinal layer
& Circular Layer |
|
Smooth Muscle Contractions opperate how?
|
by interaction with cytoskeleton
|
|
Dense bodies of Smooth Mucle Contract how?
|
correspond to Z-discs of skeletal muscle
|
|
What is innercation of Smooth Muscle?
|
Innercated by ANS
|
|
Smooth muscle contracts as a unit excpet for where? (2 spots)
|
iris of eye
& arrector pili muscles in skin |
|
What nerve plexus lies between circular and longitudinal muscularis?
|
Myenteric nerve plexus
|
|
What does Myeneric nerve plexus control?
|
peristalsis and segmentation
|
|
What nerve plexus lies in submucosa?
|
Submucolsal nerve plexus
|
|
What is the function of the submucosal nerv plexus?
|
signal glands to secrete
|
|
What kind of membrane is the peritoneum?
|
serous
|
|
two kinds of peritoneum?
|
visceral and parietal
|
|
what is the peritoneal cavity?
|
a slit like potential space
|
|
What is a double layer of peritoneum?
|
mesentery
|
|
Function of Mesentery?
|
hold organs in place
site of fat storage provides route for crculatory cessels and nerves. |
|
What is found behind the peritoneum?
|
retroperitoneal organs
|
|
What digestive organs keep their mesentery?
|
peritoneal organs
|
|
mesentaries attatch to what?
|
posterior abdominal wall
|
|
The lips and cheeks are formed from waht?
|
the orbicularis oris and buccinator muscles
|
|
The labial frenulum connects to what to what?
|
lips to gum
|
|
The palate forms what?
|
the roof of the mouth
|
|
What muscles are found within and external of the tongue?
|
intrinsic muscles
extinsic muscles |
|
What secure tongue to floor of mouth?
|
lingual frenulum
|
|
3 toungue papillae?
|
filiform papillae
fungiform papillae circumvallate papillae |
|
What papillae has no taste buds?
|
Filiform papillae
|
|
What marks the border between mouth and pharynx?
|
sulcus Terminalis
|
|
1/3 of tongue is found where?
|
oropharynx
|
|
3 glands that makes up the salvary glands?
|
paratoid glands
submandibular glans sublingual glands |
|
where is parotid gland/duct found?
|
parallil to zygomatic arch
|
|
where is submandibular gland?
|
medial surface to mandible
|
|
where is sublingual gland found?
|
floor of oral cavity
|
|
two types of pharynx?
|
oropharunx and laryngopharynx
|
|
What is a contunuation of the pharyn?
|
the esophagus
|
|
Where does the esophagus join the stomach?
|
inferior to the diaphragm
|
|
Def. Cardiac sphincter
|
closes lumen to prevent stomach acid from entering esophagus
|
|
gland of the esphagus?
|
tubulgalveolar glands
|
|
Muscle structure of esphagus?
|
skeletal muscle
|
|
What is the most external layer of the esophagus?
|
adventitia
|
|
In stomach what begins protein digestion?
|
secretion of pepsin
|
|
3 muscle layers of stomach?
|
circuar, longitudinal, and oblique
|
|
Glands of stomach?
|
gastric gland
|
|
Three cells of the stomach?
|
mucous neck cell
perietal cells cheif cells |
|
three cells of intestine walls?
|
absorptive cells
goblet cells enterpendocrine cells |
|
What recieves digestive enzymes and bile?
|
duodenum
|
|
three subdivisions of small intestine?
|
duodenum
jejunum ileum |
|
function of large intestine?
|
digest residue
absorb water and electrolytes |
|
Large intestine is subdivides into g things?
|
cecum, vermiform appendix, colon, rectum, anal canal
|
|
3 special feature of large intestine?
|
teniae coli
haustre epiploic |
|
What is the beginning of the large intestine called?
|
cecum
|
|
what contains lymphoid tissues and neutralizes pathogens?
|
vermiform appendix
|
|
colon is divided into 4 segments?
|
ascending, transverse, descending, and sigmoid colon
|
|
What descends along the inferior half of the sacrum?
|
the rectum
|
|
The last subdivision of the large intestine
|
anal canal
|