Ejaculation is controlled by a reflex arc that involves several nerves and neurotransmitters.The final neurotransmitter in this arc that directly stimulates the contraction of the muscularis of the male reproductive tract is:
A) Acetylcholine.
B) Nitric oxide.
C) Oxytocin.
D) Norepinephrine.
E) Somatostatin.
Correct Answer:
Verified
Q2: The primordial follicles collectively make up:
A)The ovarian
Q3: A young couple has had regular,unprotected sexual
Q4: A disorder of sexual development (e.g.,having an
Q5: The Sertoli cell expresses:
A)The FSH receptor and
Q6: Estrogen has which of the following cardiovascular
Q7: During the early follicular phase,the granulosa cells
Q8: Spermiogenesis results in the metamorphosis of which
Q9: "Lactational amenorrhea" is a physiological phenomenon that
Q10: In the male hypothalamic-pituitary-gonadal axis,negative feedback on
Q11: The zona pellucida represents a formidable barrier
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