BIOL 235 A&P 1 101 Module 6 answered exam 6 endocrine system (Portage learning)

Question 1
pts
Explain two reasons why a woman with low levels of LH would not be able to become pregnant.

(1) LH acts on the ovary to cause ovulation to occur. (2) LH causes progesterone release to
facilitate potential fertilization of the egg and pregnancy. Progesterone is a key hormone for
the maintenance of pregnancy.


Question 2
pts

Would you expect a female to have testosterone in their bloodstream? Explain why or why not.



(1) Yes. Both male and female bodies produce “all” the sex hormones. However, the ratios
are different.
(2) The adrenal glands are largely responsible for producing this “opposite” hormone that
the ovaries would not.


Question 3
pts

Label the endocrine glands (A-C)

A: _____________
B: _____________
C: _____________

, A: Pineal gland
B: Hypothalamus
C: Pituitary gland


Question 4
pts
Explain the concept of positive feedback. Give an example of a hormone that works through
positive feedback.

.

1- Positive feedback is the action of a hormone increasing the production of that hormone.
(This is the opposite of negative feedback).


2- One example is the action of oxytocin causing the uterus to contract during labor.
Oxytocin enhances the effect of the uterus contractions, causing more oxytocin to be