Day One Flashcards by Patrick Erley

Q

Testes function

A

80% spermatogenesis

20% testosterone production

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Q

When do testicles descend?

A

7-9 months fetal life

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Q

Dartos muscle

A

Wrinkles the balls

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Q

Cremaster muscle

A

Lifts the balls

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Q

Where are sperm stored before ejaculation?

A

Ampulla of the vas deferens

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Q

What inhibits LH and GnRH production?

A

Testosterone

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Q

What causes testis to drop into inguinal canal?

A

ANH

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Q

What causes testes to drop out of inguinal canal?

A

Testosterone

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Q

sertoli cells prevent?

A

autoimmune destruction of sperm

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Q

where are sperm formed?

A

seminiferous tubules

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Q

where do sperm mature?

A

epididymis

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Q

what regulates conversion of spermatogonia to spermatocytes?

A

FSH

Sertoli cells

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Q

what regulates final maturation of sperm?

A

LH and testosterone

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Q

seminal vesicle

A

secretes nutrients for sperm

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Q

average sperm per ejaculation

A

400 million

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Q

Erection is caused by what stimulation?

A

Parasympathetic

Q

Lubrication

A

Parasympathetic stimulation

Only small amount, mostly female

Q

Emission and ejaculation

A

Sympathetic stimulation

Q

Where does spermatoenesis begin?

A

Hypothalamus and pituitary gland

Q

What is FSH inhibited by?

A

Inhibin

Q

Sertoli cells make…

A

ABP - carrier
Plasminogen - cleaves
inhibin - inhibits FSH