1.

Ejaculation of semen A. Depends on a spinal cord reflex. B. Depends on sympathetic nerve activity. C. Involves rhythmic contractions of striated muscles. D. Is accompanied by contraction of the cremasteric muscles. E. Is followed by orgasm.

Answer»

A. True The centre is in the lumbosacral region. 

B. True Stimulation of the hypogastric nerves in man can cause ejaculation. 

C. True These compress the urethra. 

D. True This causes elevation of the testicles. 

E. False Ejaculation and orgasm coincide.



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