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MIcroanatomy > Male Reproductive System > Flashcards

Male Reproductive System Flashcards

1
Q

Functions of the MRS (3)

A

Production of male sex cells
Production of testosterone
Introduction of male gametes into female rep. organs
Production of other hormones such as PMDH/AMH in male embryo and inhibin in adult

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2
Q

Where is the site of spermatogenesis and production of testosterone

A

TESTIS

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3
Q

What surrounds the testis

A

Tunicae

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4
Q

The parenchyma in testis is composed of

A

Seminiferous tubules with Sertoli cells

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5
Q

The interstitium contains what

A

Interstitial cells of leydig

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6
Q

Tunica vaginalis is composed of

A

Mesothelium and CT layer

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7
Q

What is the tunica albuginea

A

Capsule of dense connective tissue composed of collagen fibers, few elastic and myofibroblast

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8
Q

Tunica albuginea is continuous with CT trabeculae called? And does what?

A

Septule testis

Separate seminiferous tubules

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9
Q

The Leydig cells are located where

A

Between seminiferous tubules

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10
Q

Seminiferous tubules are composed of

A

Spermatogenic epithelium

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11
Q

Spermatogenic epithelium is surrounded by

A

Lamina propia of collagen and elastic fibers

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12
Q

What is spermatogonia (2)

A

Most immature spermatogenic cells

Small round cells with dark round nuclei

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13
Q

Where is the spermatogonia (by what)

A

Lie next to basement membrane

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14
Q

Seminiferous tubules cells are lined by

A

Spermatogenic cells and sertoli cells

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15
Q

Formation of spermatids

A

Spermatogonia stem cells proceed to spermatogonia A and B
Spermatogonia B under mitosis to 1ry spermatocytes
1ry spermatocytes undergo 1st meiosis to form 2ry spermatocytes which in turn undergo 2nd meiosis to form spermatids

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16
Q

What are spermatids

A

Haploid cells present near the lumen of the seminiferous tubules where they are still immotile

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17
Q

T or F

Spermatids in the seminiferous lumen are in IMMOTILE state

A

TRUE

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18
Q

Where are Myoid cells located

A

Outside basement membrane of each tubule

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19
Q

Function of Myoid cells

A

Move spermatozoa out of tubules

20
Q

Spermatic pathway (8)

A 
Seminiferous tubules
Tubuli recti
Rate testis
Efferent ductules (head)
Epididymal duct
Ductus deferens
Pelvis Urethra
Penile Urethra
21
Q

Sertoli cells are characterized by

A

Presence of tight junctions that divide the seminiferous epithelium into basal adluminal compartment

22
Q

Functions of sertolli cells (7)

A

Support, protect, nourish spermatogenic cells
Secrete supporting testicular fluid
Protect (via tight junctions) spermatids from Immune system
Have receptors for FSH which releases Androgen Binding Protein which binds to androgensia (process that influences cell differentiation)
Synthesize Antimulerian hormone
Release hormone inhibin

23
Q

The hormone inhibin function

A

Suppress secretion of FSH

24
Q

Leydig cells secrete

A

Testosterone

25
Q

Leydig cells are controlled by what hormone

A

LH

26
Q

WHat is responsible for 2ry male sex characteristics and libido (sexual drive)

A

TESTOSTERONE

27
Q

Anabolic effect of testosterone

A

Stimulate growth of skeletal muscles and bone

28
Q

What is the vascular supply of testis

arterial supply and venous drainage

A

EPIDIDYMIS

29
Q

Spermatic cord is composed of (4)

A

Testicular artery
Testicular vein
Lymphatic
Ductus Referents

30
Q

Seminiferous tubules terminate as straight testicular tubules that empty into the anastoming channels of

A

RETE TESTIS

31
Q

Seminiferous tubules empty into (5)

A 
Straight tubules
Rete testis
Epididymis
Epididymal duct
Ductus deferens
32
Q

The efferent ductules of Epididymis

A

Connect the epididymal duct in the head of epididymis

33
Q

Epididymal duct is

A

A single long coiled tubule: pseudostratifies epithelium with stereocilia

34
Q

Main function of epididymal duct

A

Fluid reabsorption and secretion of glycerophosphocholine

35
Q

What site of the epididymal duct is used for sperm storage

A

TAIL

36
Q

Its terminal portion is the ejaculatory duct in the MRS. What am I?

A

Ductus deferens

37
Q

Accessory sex glands (4)

A

Bulbourethral glands
Prostate glands
Ampullatory glands
Vesicular glands

38
Q

What do the accessory sex glands have in common

A

They’re all tubuloalveolar

39
Q

Vesicular glands/ seminal vesicles produce

A

Fructose which is the source of energy for sperm cells

40
Q

What is the prostate

A

Multilobulated gland that surrounds the prostatic urethra

41
Q

Prostate Gland (3)

A

Glandular tissue surrounded by fibromuscular stroma that forms multiple lobules
Smooth M surrounds lobules
Corpora amylacea is often seen within lumen

42
Q

Bulbourethral glands empty into

A

pelvic urethra

43
Q

Penis consist 1ry of what

A

Erectile tissue and urethra

44
Q

What is the corpora cavenosa

A

Paired masses of erectile tissues

45
Q

What is the corpus spongiosum

A

Single mass of erectile tissue that surrounds the urethra more delicate than corpus cavenosa

46
Q

Portions of the male urethra (3)

A

Prostatic
Pelvic
Penile

MIcroanatomy (4 decks)

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