The ________ serves as a common passageway for two tracts in the male
a. anterior pituitary
b. ductus deferens
c. ejaculatory duct
d. ureter
e. urethra
E
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The size of morula is about the same size as the original zygote.
a. true b. false
The structure that overlies the organ of Corti and is attached to the tips of the hair cells is the
A) tectorial membrane. B) perilymph. C) stapedius. D) endolymph. E) basilar membrane.
The sustentacular cells
A. mature to form sperm cells. B. produce testosterone. C. provide nourishment for development of sperm. D. cover and protect most of the testes. E. produce seminal fluid.
Erection of the penis occurs when
A. lymphatic fluid accumulates in the glans penis. B. penile erectile tissue becomes engorged with blood. C. the pubic bones move together. D. the bulbourethral muscles contract. E. smooth muscle contraction occurs in ductus deferens.