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Y3 Reproductive > Male Repro Physiology > Flashcards

Male Repro Physiology Flashcards

1
Q

The seminal vesicles lie ____ to the prostate

A

Superior / above

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2
Q

What is the other name of the vas deferens?

A

Ductus deferens

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3
Q

What is the function of the vas D?

A

Concentrates and store sperm between the epididymis and ejaculatory duct

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4
Q

What are the components of the spermatic cord?

A

Vas D
Pampiniform plexus of veins
Testicular artery
DOUBLE CHECK THIS

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5
Q

The bulbourethral gland lies _____ to the prostate

A

Inferior / below

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6
Q

What is the function of the bulbourethral gland?

A

Secretes fluid to semen during arousal to neutralise acidity in vagina

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7
Q

What is the function of the seminal vesicles?

A

Secrete fructose rich fluid to semen - gives sperm energy to travel long distance

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8
Q

What part of the epididymis receives sperm?

A

Head

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9
Q

What is the tunica vaginalis?

A

A membrane covering the testis

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10
Q

What is the dartos muscle?

A

Smooth muscle of the scrotum

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11
Q

What smooth muscle is responsible for raising and lowering the testis?

A

Cremaster

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12
Q

Where is the cremaster muscle located?

A

Covers the testis and spermatic cord

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13
Q

What is the corpus spongiosum?

A

Erectile tissue of the penis surrounding the urethra

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14
Q

What is the corpus cavernosum?

A

Two masses of erectile tissue in the penis

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15
Q

What is used to measure testis size?

A

Orchidometer

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16
Q

What is the corpus albuginea?

A

Membrane covering both corpus cavernosum and testis

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17
Q

What is more superficial in the testis, the tunica albuginea or tunica vaginalis?

A

Tunica albuginea deep to tunica vaginalis

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18
Q

What is the function of the testis?

A

Spermatogenesis and androgen hormone production

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19
Q

Define androgens

A

Hormones responsible for male secondary sexual characteristics

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20
Q

What cells of the testis are responsible for androgen production?

A

Leydig cells

21
Q

What is the main androgen?

A

Testosterone

22
Q

Where do the testis develop?

A

Posterior abdominal wall

23
Q

When do the testis descend?

A

Pre-birth

24
Q

What is testis descent dependent on?

A

Testosterone

25
Q

What part of the testis does spermatogenesis occur?

A

Seminiferous tubule

26
Q

What environmental factor is spermatogenesis dependent on?

A

Low temperature - spermatogenesis cannot occur in abdo cavity

27
Q

Testosterone is a catabolic steroid. T or F

A

False - anabolic steriod

28
Q

“Body shape, deep voice, thick skin, libido, penile erection” are all examples of ______

A

Male secondary sexual characteristics

29
Q

What is the name of a mature sperm cell?

A

Spermatozoon

30
Q

What part of the sperm is the acrosome in?

A

Head

31
Q

What is the route of sperm to the external urethral sphincter?

A

testis > epididymis > vas D > ejaculatory duct > urethra

32
Q

What is meiosis 1 in males?

A

Diploid germinal cell >
Diploid primary spermatocyte >
Haploid secondary spermatocyte

33
Q

What is meiosis 2 in males?

A

Haploid secondary spermatocyte > Haploid spermatid

late differentiate to spermatozoa

34
Q

What is the function of sertoli cells?

A

Secrete inhibin and activin

also other functions

35
Q

Where is GnRH secreted from?

A

Hypothalamus

36
Q

How often is GnRH secreted in males?

A

Every 2-3 hours

37
Q

What is the function of GnRH?

A

Stimulates anterior pituitary to secrete LH and FSH

38
Q

How often are LH and FSH secreted in males?

A

Constant

39
Q

Where in males is testosterone secreted from?

A

Testis and adrenal glands

40
Q

What is the function of LH?

A

Acts on Leydig cells to stimulate T secretion

41
Q

What is the function of FSH?

A

Acts on Sertoli cells to enhance spermatogenesis

42
Q

How is LH regulated?

A

Testosterone has negative feedback on LH

43
Q

What is the function of inhibin?

A

Decreases FSH

44
Q

What is the function of activin?

A

Increases FSH

45
Q

How is FSH regulated

A

By inhibin and negative feedback from testosterone

46
Q

Are erections under sympathetic or parasympathetic control?

A

Parasympathetic

47
Q

Is ejaculation under sympathetic or parasympathetic control?

A

Sympathetic

48
Q

“Corpus cavernosa become engorged with blood” describes

A

Erections

49
Q

What is capacitation?

A

Post ejection sperm have increased motility

Y3 Reproductive (28 decks)

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