Hormonal Control & Spermatogenesis

Question 1

is the overall process of sperm formation

Answer 1

Spermatogenesis

Question 2

Spermatogenesis is divided into 2 phases

Answer 2

1. Spermatocytogenesis
2. Spermiogenesis

Question 3

Proliferative phase whereby spermatogonial cells muliply by a series of mitotic divisions followed by meitotic divisions that produces ________

Answer 3

Spermatocytogenesis:
haploid(n) number of chromosomes

Question 4

maturation of of the spermatids while they are still in the adluminal compartment

Answer 4

Spermiogenesis

Question 5

Production of testosterone by Leydig cells is controlled by

Answer 5

LH

Question 6

Production of testosterone by Leydig cells:
1. ________ cause an increase in LH secretion by APG

Answer 6

low levels of testosterone

Question 7

Production of testosterone by Leydig cells:
2. increase in LH secretion causes

Answer 7

Leydig cells to secrete testosterone

Question 8

Production of testosterone by Leydig cells:
3. when increased, _________ the further secretion of LH and testosterone levels are thus stabilized (negative feedback)

Answer 8

testosterone inhibits

Question 9

Production of testosterone by Leydig cells:
4. Testosterone is responsible for

Answer 9

1. supporting spermatogenesis
2. Development and maintenance of libido
3. Secretory activity of the accessory sex glands
4. general body feature associated with the male

Question 10

________ stimulates the production of ABP and estrogen by Sertoli cells

Answer 10

FSH production by APG

Question 11

Production of androgen-binding protein (ABP) by Sertoli cells:
1. ABP is secreted into the ______ and binds with _______ to stabilize their concentrations and ensure appropriate amounts for________

Answer 11

Lumen of seminiferous tubules;
Binds with testosterone and other androgens;
Spermatogenesis

Question 12

Production of androgen-binding protein (ABP) by Sertoli cells:
2. When FSH production reaches its peak,______ its further release through producing _____

Answer 12

Sertoli cells control;
Producing inhibin

Question 13

FSH also stimulates estrogen production by Sertoli cells:
actual secretion of estrogen might arise from the __________________________________________

Answer 13

From the intracellular conversion of testosterone from Leydig cells