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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?

24
Q

What is testis descent dependent on?

A

Testosterone

25
What part of the testis does spermatogenesis occur?
Seminiferous tubule
26
What environmental factor is spermatogenesis dependent on?
Low temperature - spermatogenesis cannot occur in abdo cavity
27
Testosterone is a catabolic steroid. T or F
False - anabolic steriod
28
"Body shape, deep voice, thick skin, libido, penile erection" are all examples of ______
Male secondary sexual characteristics
29
What is the name of a mature sperm cell?
Spermatozoon
30
What part of the sperm is the acrosome in?
Head
31
What is the route of sperm to the external urethral sphincter?
testis > epididymis > vas D > ejaculatory duct > urethra
32
What is meiosis 1 in males?
Diploid germinal cell > Diploid primary spermatocyte > Haploid secondary spermatocyte
33
What is meiosis 2 in males?
Haploid secondary spermatocyte > Haploid spermatid | late differentiate to spermatozoa
34
What is the function of sertoli cells?
Secrete inhibin and activin | also other functions
35
Where is GnRH secreted from?
Hypothalamus
36
How often is GnRH secreted in males?
Every 2-3 hours
37
What is the function of GnRH?
Stimulates anterior pituitary to secrete LH and FSH
38
How often are LH and FSH secreted in males?
Constant
39
Where in males is testosterone secreted from?
Testis and adrenal glands
40
What is the function of LH?
Acts on Leydig cells to stimulate T secretion
41
What is the function of FSH?
Acts on Sertoli cells to enhance spermatogenesis
42
How is LH regulated?
Testosterone has negative feedback on LH
43
What is the function of inhibin?
Decreases FSH
44
What is the function of activin?
Increases FSH
45
How is FSH regulated
By inhibin and negative feedback from testosterone
46
Are erections under sympathetic or parasympathetic control?
Parasympathetic
47
Is ejaculation under sympathetic or parasympathetic control?
Sympathetic
48
"Corpus cavernosa become engorged with blood" describes
Erections
49
What is capacitation?
Post ejection sperm have increased motility

Y3 Reproductive (28 decks)

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