Male sexual response

Question 1

What does the male sexual response include?

Answer 1

Erection
Ejaculation

Question 2

What happens when NOT sexually aroused?

Answer 2

Cavernous arteries are constricted and little blood is sent to the blood vessels in corpus cavernosum
Deep dorsal vein is uncompressed and blood can leave penis

Question 3

What happens during an erection?

Answer 3

Parasympathetic neurons target helcine arteries
Cavernous arteries dilate which increases blood flow into corpus cavernosum
Deep dorsal vein compresses and blood can’t leave the penis

Question 4

What happens during ejaculation?

Answer 4

Sympathetic neurons stimulate:
Internal urethral sphincter to close
Contraction of smooth muscle in epididymis, vas deferens, and ejaculatory duct
Stimulates secretion of accessory glands

Question 5

Semen description

Answer 5

10% is sperm
90% is seminal fluid

Question 6

What is in the seminal fluid of semen?

Answer 6

Clotting factors
Substances to help sperm move
Substances to suppress immune response in female repr, tract and kill bacteria

Question 7

Which muscles help with expulsion of semen?

Answer 7

Bulbospongiousus
Ischiocavernosus