Among non-mammalian vertebrates, the cloaca is an anatomical structure that functions as _____
A) a specialized sperm-transfer device produced only by males
B) a shared pathway for the digestive, excretory, and reproductive systems
C) a source of nutrients for developing sperm in the testes
D) a gland that secretes mucus to lubricate the vaginal opening
B
You might also like to view...
Brachiopods develop as protostomes, but they show ______ cleavage.
Fill in the blank(s) with the appropriate word(s).
On Monday morning, after you’ve already finished reading your email and begun assembling apparatus for your next series of tests, one of your colleagues arrives late, looking decidedly unwell. After exchanging the usual pleasantries, you find out the reason: There were two oranges in the fridge on Friday before it was your turn to clean it out. The other orange had fewer black mold spots than the one you triple-bagged while holding your breath…and your colleague really loves oranges. What was she suffering from over the weekend?
a. opportunistic mycosis b. mycetismus c. mycotoxicosis d. superficial mycosis
When blood levels of cortisol rise above the set
point, secretion(s) of __________ is (are) slowed. a. CRH b. ACTH c. TSH d. STH e. CRH and ACTH
The end result of meiosis I is
A. secondary spermatocytes. B. spermatozoa. C. spermatids. D. primary spermatocytes. E. spermatogonia.