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Medicine > male reproductive > Flashcards

male reproductive Flashcards

1
Q

what is the dartos muscle?

A

thin muscle layer that covers the scrotum

-brings it toward the body

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2
Q

what kind of muscle is cremaster muscle?

A

skeletal

-extrusion of internal oblique

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3
Q

what is contained in the spermatic cord?

A 
ductus deferens
nerves
testicular artery
lymph vessel
pampiniform plexus of testicular veins
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4
Q

what are contained in the lobules of the testes?

A

seminiferous tubules

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5
Q

what is the mediastinum testis?

A

hilum of the testes

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6
Q

what is the sustentacular cells?

A

support cells for the developing sperm within the seminiferous tubules

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7
Q

what is the role of leydig cells?

A

produce androgens (testosterone)

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8
Q

what does LH do in males?

A

stimulates leydig cells to produce testosterone (located in the interstitial space)

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9
Q

what does FSH do in males?

A

acts indirectly to stimulate spermatogenesis

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10
Q

where do the blood vessels, ducts, lymphatic vessels and nerves enter the testes?

A

mediastinum testis

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11
Q

which cells produce the sperm?

A

sertoli cells (sustenacular cells) within the seminiferous tubules

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12
Q

what is the final stage of spermatogenesis called?

A

spermiogenesis (sperm becomes motile and gains acrosomal cap)

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13
Q

what is contained in the midpiece of the sperm?

A

mitochondria

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14
Q

what is contained in the acromosal cap?

A

protease

hyaluronidase (to penetrate egg)

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15
Q

what is responsible for resorbing of sperm?

A

sterocilia in epididymis

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16
Q

what is the histology of the epididymis and vas deferens?

A

pseudostratified ciliated columnar

17
Q

where do the seminal vesicle and the ampulla of the vas deferens meet?

A

ejaculatory duct

18
Q

which fluid makes up 60% of semen?

A

seminal fluid

19
Q

what are the components of the seminal fluid?

A

fructose
prostaglandins (causes os to widen)
clotting proteins (coagulates semen w/in 5 min of ejaculation)

20
Q

what makes up 25% of semen?

A

prostatic fluid

21
Q

what does the prostate secrete?

A

citric acid
seminalplasmin (abx)
PSA (liquifies semen w/in 10-20 minutes after ejaculation)

22
Q

what is the function of the bulbourethral secretions?

A

lubricant and neutralizes urine in urethra

23
Q

which muscle is responsible for ejaculationa?

A

bulbospongiosus

24
Q

what is erectile tissue composed of?

A

blood sinuses surrounded by epithelial cells surrounded by smooth muscle

25
Q

what chemical is responsible for erection?

A

NO relaxes smooth muscle of arterioles

Medicine (146 decks)

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