Lecture 70 - male reproductive system

Question 1

What are the two major functions of Reproductive organs?

Answer 1

Gametogenesis:
-Spermatogenesis produces Spermatozoa
Oogenesis produces Ova

Secretion of hormones:
Testosterone (in leydig cell)
Estrogen and Progesterone (theca and granulosa)

Question 2

At the end of mitosis, developing sperm cells are called?

Answer 2

Spermatocytes

Question 3

Human gametes contain how many chromosomes?

Answer 3

23

Question 4

When does spermatogenesis begin?

Answer 4

Puberty

Question 5

The first meiotic division gives us the ______ _______

Answer 5

The first meiotic division gives us the secondary spermatocyte

Question 6

When does oogenesis begin?

Answer 6

Fetal life

Question 7

After the first meiotic division, ann oogonnium has become

Answer 7

A secondary oocyte and a polar body

Question 8

In females, esotrogen and progesterone are produced by the

Answer 8

Follicular cells, and corpus leuteum

Question 9

what releases GnRH (gonadotropin releasing hormone) in both males and females

Answer 9

Hypothalamus

Question 10

In males, the primary target for FSH is

Answer 10

Sertoli cells

Question 11

In males LH influences:

Answer 11

Testosterone production

Question 12

What is in the seminiferous tubules?

Answer 12

Sertoli cells (surrounding the outside) and support sperm

Spermatogonia

Inters

Question 13

True or False:

Spermatogonia divide and produce all sperm cells

Answer 13

true

Question 14

Before birth, Testosterone:

Masculinises __________ tract and external ________

promotes descent of ______into scrotum

Answer 14

Before birth, Testosterone:

Masculinises reproductive tract and external genitialia

promotes descent of testes into scrotum