Final - Male Reproductive System

Question 1

1.Explain the generalized anatomy of a sperm (1:15)

Answer 1

has a nucleus, mitochondria and a tail

Question 2

What are the human male gonads? What are their function?

Answer 2

essentially the testicles – responsible for making gametes, sperm and testosterone.

Question 3

3.Why are testes outside the body? (2:25) \

Answer 3

they have to reach a certain temperature – lower, necessary for sperm production

Question 4

4.What is spermatogenesis? (2:25)

Answer 4

it is sperm production

Question 5

5.Explain the anatomy of the testes, and the function of each component of the testes. (2:45)

Answer 5

lobule - which are loaded with seminiferous tubules, and the seminiferous tubules – have basal lamina and lumen, Sertoli cells – nourish developing sperm cells, Leydig cells – which secrete testosterone

Question 6

6.Explain the “hormonal cascade” that occurs in males, and compare/contrast with females, relating to puberty and the development of male reproduction (3:34)

Answer 6

the hypothalamus gland produces a hormone, GnRH – the anterior pituitary gland releasing FSH & and LH – where in females it releases estrogen, but in males it spurs the Leydig Cells to release testosterone.

Question 7

7.What does LH initiate the release of in females? (3:46)

Answer 7

estrogen

Question 8

8.What does LH initiate the release of in males? (3:50)

Answer 8

testosterone

Question 9

9.What are leydig cells? (3:50)

Answer 9

it is which release testosterone/secretes it

Question 10

10. What does FSH initiate the release of in males? (3:53)

Answer 10

Sertoli cells

Question 11

11. What are sertoli cells? (3:53)

Answer 11

nourishes developing sperm in males

Question 12

12. What is ABP, and what is its function? (3:56)

Answer 12

creates large concentrations of testosterone

Question 13

13. What are spermatogonia? (4:08)

Answer 13

they set the sperm making process in motion by dividing.

Question 14

Are spermatogonia produced during the entire life cycle of males? How does spermatogonia division change after puberty

Answer 14

Yes

They divide by producing 2 distinct spermatogonia.

Question 15

Explain any differences in cellular division, chromosomal number and genetic variation prior and post puberty for spermatogonia cells.

Answer 15

Post: It uses mitosis to continually divide into 2 identical daughter cells.

Post/Cellular division: 1 turns into primary spermatocyte – and then that 1 spermatocyte turns into 2 haploid cells which then foregoes mitosis 2 which then makes 4 haploid cells/ spermatocytes