A human male has engaged in sexual activity. Did he use his sympathetic or parasympathetic nervous system? Explain
your answer. What will be an ideal response?
ANSWER: Actually, both systems were used. For the male to achieve an erection, the parasympathetic
system would have generated a response. However, to ejaculate, the sympathetic system
would have needed to be in charge.
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The major histocompatibility complex is also called the
A) human leukocyte antigen (HLA). B) T cell receptor. C) toll-like receptor complex. D) T cell receptor or toll-like receptor.
The semen from a man who has had a vasectomy would include each of the following except ________
A) sperm B) secretions from the prostate gland C) secretions from the bulbourethral glands D) secretions from the seminal vesicles
Test of hypothesis:
a. observation b. experiment c. control
According to the figure, what is occurring during day 2?
A. copulation B. luteal regression C. menstruation D. release of corpus luteum E. ovulation