During parturtition, mechanical pressure
caused by the movement of the fetus through
the uterus causes the release of ___ from the
___.
a. HCG---hypothalamus
b. oxytocin---posterior pituitary
c. oxytocin---hypothalamus
d. HCG---posterior pituitary
e. oxytocin---adrenal cortex
B
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Which hormone prevents the endometrium from breaking down until the placenta secretes enough
hormones to maintain it? a. hGH b. FSH c. estrogen d. hCG e. ADH
Mycobacterium leprae infects (epithelial/macrophage/skin) cells.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning plasma cells is FALSE?
A. They live for many years and function as memory cells. B. They are descended from activated B cells. C. They can produce large quantities of antibodies on a daily basis. D. They secrete a single type of antibody molecule specific for a single epitope. E. The antibodies they produce can remain in circulation for weeks.
Imagine you are studying horns in male deer and you hypothesize that horns are costly honest signals that help to prevent male fights. What three testable predictions should you make to test your hypothesis?
What will be an ideal response?