Reading...
Play button
Play button
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;
12 Cards in this Set
- Front
- Back
|
The target cells of the hormone ______ are located in a woman's breasts and uterus. This hormones cause its target cells to contract, which releases milk from the breasts cells to feed an infant and causes the painful contractions of the uterus that push out the newborn during labor.
|
oxytocin
|
|
|
Human sex hormones are classified as which type of biological molecule?
|
lipid
|
|
|
Why are steroid hormone complexes with their receptors able to directly bind to DNA to influence gene expression, whereas peptide hormones must influence gene expression indirectly?
|
Steroid hormones are lipid-based, allowing them pass through the lipid-composed cell membrane to enter the cell and directly bind to DNA. Peptide hormones are not lipid-based and therefore cannot pass through the cell membrane.
|
|
|
The ____ is a pea-sized gland located below the hypothalamus in the brain and is one of the controlling glands of the endocrine system.
|
Pituitary gland.
|
|
|
the pituitary gland is actually a fusion of two glands. Which of the following statements about its origin is correct?
|
the posterior pituitary is an outgrowth of the hypothalamus; the anterior pituitary develops from a fold of tissue at the roof of the embryonic mouth
|
|
|
The ____ gland releases melatonin, which is a hormone important for reproduction in certain mammals.
|
pineal
|
|
|
The hypothalamus secretes which two hormones into the posterior pituitary gland from which they enter the bloodstream and act on their target cells?
|
oxytocin and ADH
|
|
|
The following pairs link a human gland with the hormone(s) it secretes. Which pairing is incorrect?
|
thyroid; oxytocin
|
|
|
The target tissues or organs of insulin are:
|
Muscles and the liver
|
|
|
blood samples from an individual who has fasted for 24 hours would have:
|
high levels of glucagon and low level of insulin
|
|
|
Many female body builders take steroids (testosterone) to increase muscle mass and achieve their body shape. The consequences can include all of the following except;
-increased competitiveness and aggressiveness -increased concentration -decreased object memory -decreased fertility -increased hair growth |
increased concentration
|
|
|
if a high dose of time-released testosterone is given to a male songbird, which of the following is not a likely effect?
-he would get into many fights with larger males -he would have a longer life span than most other males -he would enjoy increased reproductive success -he would develop a greater muscle mass than other males of similar body weight |
he would have a longer life span than most other males
|
