Ch 27 Male Reproductive System

Question 1

What are the functions of the gonads?

Answer 1

1 produce gametes

2 secrete sex hormones

Question 2

Name the gametes

Answer 2

ovam, spermatozoa

Question 3

Are gametes haploid or diploid?

Answer 3

haploid

Question 4

Name the gonads

Answer 4

ovaries, testes

Question 5

What is cryptorchidism?

Answer 5

Failure of testes to descend into the scrotum

Question 6

What two cells are found in the seminiferous tubules?

Answer 6

sertoli cells

spermatogenic cells

Question 7

Sertoli cells

Answer 7

• form blood-testis barrier

- secrete inhibin, and ABP to mediate effects of testosterone diffusing from interstitial cells

Question 8

What are the exocrine and endocrine functions of the testes?

Answer 8

• exocrine: releasing spermatozoa into ducts

- endocrine: releasing hormones into blood; testosterone, inhibin

Question 9

What is the process of producing spermatozoa called?

Answer 9

spermatogenesis

Question 10

What hormone stimulates the interstitial cells of Leydig to produce testosterone?

Answer 10

LH

Question 11

When is inhibin released?

Answer 11

when sperm count is too high and inhibits anterior pituitary to release FSH and GnRH

Question 12

Where does a vasectomy take place?

Answer 12

they snip the vas deferens on each side

Question 13

What contributes to the volume of semen?

Answer 13

~60-70% comes from seminal vesicles (fructose, citric acid, Vit. C, prostaglandins, pro-seminogelin)
~30% comes from prostate gland (citric acid, PSA)