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Microanatomy Exam 4 > Ducts & Leydig Cells > Flashcards

Ducts & Leydig Cells Flashcards

1
Q

__% of married couples have fertility problems

A

10%

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2
Q

What are the interstitial cells of the testicular stroma?

A

Leydig cells

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3
Q

Leydig cells are located?

A

In CT between seminiferous tubulus

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4
Q

Cytoplasm of Leydig cells

A

Lightly eosinophilic large cytoplasm

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5
Q

Straight tubules also called?

A

Tubuli recti

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6
Q

Epithelium of straight tubules

A

Cuboidal epithelium (or simple squamous)

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7
Q

Straight tubule function

A

Connect seminiferous tubules to rete testis

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8
Q

Rete testis aka?

A

Network tubules

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9
Q

Rete testis are?

A

Anastomotic tubules located in mediastinum

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10
Q

Epithelium of rete testis

A

Similar to straight tubules (cuboidal or simple squamous)

Secretes fluids

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11
Q

Function of ductuli efferentes

A

Connect rete testes to epididymis

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12
Q

Ductuli efferentes epithelium

A

Ciliated simple columnar

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13
Q

Testosterone is important for?

A

Sex organ development, hair growth, etc.

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14
Q

What controls testosterone release?

A

LH

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15
Q

LH is also known as?

A

ICSH (hypothalamic interstitial cell stimulating hormone)

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16
Q

Function of rete testis and ductuli eferentes

A

Move non-motile sperm to epididymis

17
Q

Rete testis and ductuli eferentes are lined by?

A

Single layer of cuboidal epithelium cells with microvilli and:

Single cilium at rete testes

Cilia at ductuli efferentes

18
Q

2 genital ducts

A
  1. Ductus epididymis

2. Ductus deferens

19
Q

What is ductus epididymis?

A

Coiled tube which stores sperm while it matures

20
Q

Parts of ductus epididymis

A
  1. Head
  2. Body
  3. Tail
21
Q

Epithelium of ductus epididymis

A

Pseudostratified columnar with stereocilia, lined with single smooth m. layer

22
Q

Ductus epididymis connects to?

A

Ductus deferens

23
Q

How long does it take sperm to get through epididymis?

A

10-15 days

24
Q

As sperm moves through epididymis, how does it mature?

A
  1. Becomes motile

2. Gains partial ability to fertilizae

25
Q

Epithelium of ductus deferens

A

Pseudostratified columnar and gradually loses sterocilia

26
Q

Lumen of ductus deferens contains?

A

Sperm in mature male animal

27
Q

Ductus deferens tunica muscularis

A

Very thick: 3 layers of smooth m.

28
Q

Peristaltic contraction of ductus deferens is contolled by?

A

Sympathetic NS during ejaculation

Microanatomy Exam 4 (14 decks)

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