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PBCP- Reproductive Physiology > Male Reproductive function > Flashcards

Male Reproductive function Flashcards

1
Q

Where is testosterone made?

A

intersitial cells of leydig between tubules

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2
Q

What is cryptorchidism

A

Undescended testes

(Risk of cancer + overheating

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3
Q

Where does spermatogenesis and spermiogenesis occur?

A

Coiled seminiferous tubules of testis

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4
Q

Accessory glands in the male reproductive system

A

Seminal vesicle
prostate gland
cowpers

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5
Q

How is temperature regulated in the male reproductive system

A

Cremaster muscle
spermatic arteries and pumpiform plexus
counter current heat exchanger creates a tempertaure gradient

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6
Q

What are the 4 stages of sperm formation

A

Spermatogenesis
Spermiogenesis
Spermiation
Capacitation

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7
Q

What is spermatogenesis

A

Haploid gametes from the diploid precursors

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8
Q

What is spermiogenesis

A

The gametes change to become motile

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9
Q

What is spermiation

A

Release of spermatocytes to the lumen of the seminiferous tubules - swim into

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10
Q

What does spermatogenesis produce

A

Primary spermatocyte - diploid and double genetic material

Secondary spermatocytes- divide to give spermatids

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11
Q

What are spermatids?

A

Correct genetic material but not structural or motile

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12
Q

What do sertoli cells provide?

A

Nourishment
Blood/testicle barriers
toxins

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13
Q

What is located on the head of the spermocyte

A

Nuclear material and acrosomal cap

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14
Q

What is located in the mid section of the spermocytes

A

Centrioles and mitochondrial spiral

Microtubular tail with cork screw motility

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15
Q

What is meant by capacitation

A

allows the spermatazoa to fertitilse the female gamete

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16
Q

How is FSH released

A

GNRH instructs the ant pit to secrete FSH

17
Q

What does FSH cause to happen

A

Serotoli cells to activate spermatogenesis

produces inhibin

18
Q

What does LH do

A

Stimulates leydig cells to produce testosterone

19
Q

Why do serotoli cells need testosterone

A

for spermatogenesis

20
Q

Functions of testerone

A
  • essential in spermatogenesis
  • development of male phenotype in uterus
  • male reproducitve structures
  • adolescent growth spurt in bones and muscluature
  • muscle deposition
  • increase in metabolic
  • behavioural changes- libido
21
Q

What causes erection

A

Turgitidy of corpus cavernosa and sponginosum
erotic stimuli, mechanical stimuli to glans and ant penis
venous compression
sympathetic withdrawal and parasympathetic activation

22
Q

What causes ejactulation emission

A

Sympathetic reflex

23
Q

What causes ejaculation expulsion

A

somatic reflex of skeletal muscle

24
Q

What is semen

A

Seminal vesicle of fructose for nourishment, prostoglandins and clotting agents

25
Q

What can breakdown semen clots

A

Prostate glands, PSA, citrate and protease to breakdown semen clots

PBCP- Reproductive Physiology (5 decks)

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