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4 RED > AP03 Histology of the Male Reproductive Tract > Flashcards

AP03 Histology of the Male Reproductive Tract Flashcards

1
Q

Where do testes develop?

A

posterior abdominal wall

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2
Q

What forms the tunica vaginalis?

A

investing layer of peritoneum

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3
Q

What is the structure of the tunica vaginalis?

A

2 layers, visceral + parietal

fluid in between

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4
Q

What is the dense CT capsule of the testis called?

A

tunica albuginea

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5
Q

What forms the testicular septa?

A

tunica albuginea

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6
Q

What does the tunica albuginea contain?

A

Leyig cells
fibroblasts
SM cells

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7
Q

Why does the tunica albuginea have SM cells?

A

contraction of smeiniferous tubules

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8
Q

What comprises a lobule?

A

1-4 convoluted seminiferous tubules
rete testis
ductuli efferents
epididymis

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9
Q

What shape are Serotli cells?

What do they contain?

A

triangular/ovoid

disperse chromatin

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10
Q

What do Sertoli cells do?

A

nourish gamete
phagocytose XS cutoplasm from developing spermatids
secrete ABP (transport testosterone to ST lumen, FSH dependent)

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11
Q

Where are Leydig cells found?

A

in interstital tissue between seminifferous tubules

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12
Q

What do Leydig cells do?

A

produce testosterone to promote maturation of spermatozoa, LH dependent

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13
Q

What happens in the spermatogenic series during puberty?

A

mitotic division of spermatogonia (spermatocytes)

then undergo meiosis to form gametes (spermatids -> spermatozoa)

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14
Q

What is spermatogenesis?

A

process of producing spermogonia and their maturation into spermatozoa

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15
Q

What is spermiognesis?

A

maturation of spermatids into spermatozoa

part of spermatogenesis

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16
Q

What happens in spermiogenesis?

A

arrow head nucleus develops
9 fibrils surround glagellum core
sertoli cells phagocytose XS cytosol
mitchondria accumulate around falgellum core

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17
Q

What is spermiation?

A

migration to the epididymis

18
Q

What are the parts to the tubal system?

A

rete testis
ductuli efferentes
epididymis
ductus deferens

19
Q

What is the epithelial structure of the rete testis?

A

simple cuboidal epithelium with sruface microvilli and single cilium

20
Q

What are the rete testis surrounded by?

A

collagenous CT with myloid cels - mediastinum testis

21
Q

What is the epithelial structure of the ductuli efferentes?

A

simple ciliated coumnar
then
simple non-ciliated low columnar

22
Q

What do the ciliated cells of the ductuli efferentes do?

A

move non-mobile spermatozoa

23
Q

WHat do the non-ciliated cells of ductuli efferentes do?

A

resorb fluid produced by testis

24
Q

What surrounds the ducutli efferentes?

A

circular SM

25
Q

How long is the epididymis?

A

6m

26
Q

What is the structure of epithelium of the epididymis?

A

pseudostratified columnar epithelium with stereocilia

27
Q

How long are the ductus deferens?

A

35-40cm

28
Q

What is the passage of the ductus deferens?

A

inguinal canal ot psterior surface of bladder to join with the sminal vesicle to form the ejaculatory duct

29
Q

What structure in the ductus deferens allows for passage of spermatosoa?

A

stellate lumen

30
Q

What epithelium is in the ductus deferens?

A

pseudostratified columnar epithelium with stereocilia

31
Q

DEscribe the muscular layers of the ductus deferens

A

3 layers
inner + outer longitudinal
middle circular

32
Q

What is the histological profile of the seminal vesicles?

A

convoluted tubulosaccular glands with folds of secreotyr epithelium (pseudostratified columnar with basal cells)

33
Q

What do the seminal vesicles secrete?

A

fructose
water
K+
prostoglandins

34
Q

What are the 3 zones o the prostate gland?

A

peripheral
central
transitional

35
Q

What is the prostate gland made of?

A

fibromuscular storma supporting tubuloalveolar glandular units
pseudostratified columnar epithelium
secreotry and basal cells

36
Q

What does the prostate gland secrete?

A 
acid phosphatase
citric aci
zinc
prostate specific antigen
proteases / fibrinolytic enzyemes for liquifying semen
37
Q

What secretes mucous throughout the spingy urethra?

A

Glands of Littre

38
Q

What is the corpus cavernosum made of?

A

dense irregular CT
elastic fibres and SM cells
cavernosus sinuses venous

39
Q

What are cavernous sinuses continuous with?

A

muscular helicine arteries and draining veins

40
Q

What line the venous sinuses?

A

stratified columnar epithelium

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