Endocrine regulation of Male reproductive tract Flashcards Preview

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Flashcards in Endocrine regulation of Male reproductive tract Deck (14)
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1

what is the process of sperm synthesis called and where does it occur

spermatogenesis, occurs in the testes

2

how long does the full spermatogenic process take

70days

3

describe how many sperm are estimated to be produced and over how many years

around 1000 every heart beat, from puberty for over 60 years

4

what do the testes consist of

seminiferous tubules surrounded by interstitial tissue(Leydig cells, blood vessels, leukocytes, fibroblasts)

5

what are the endocrine and paracrine factors affecting the male reproductive system

endocrine = LH and FSH
paracrine = testosterone and inhibin

6

what cells secrete testosterone

Leydig cells

7

what types of cells are found in the seminiferous tubules

Sertoli cells and germ cells

8

what is the action of FSH in the male reproductive system

stimulates spermatogenesis(along with testosterone)

9

what is the action of LH in he male reproductive system

stimulates testosterone secretion from Leydig cells

10

describe the action of inhibin

decreases FSH secretion

11

what are the functions of testosterone in the testes

maintains integrity of blood-testes barrier, stimulates release of mature spermatozoa from Sertoli cells(by influencing peritubular myoid cells)

12

where is testosterone released to

the testes and in the circulation

13

wat is the function of testosterone in the circulation

negative feedback reducing release of GnRH and LH

14

what is secreted by the Sertoli cells

androgen binding globulin(ABG) and inhibin