Male Reproductive System

Question 1

Functions of the MRS (3)

Answer 1

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

Question 2

Where is the site of spermatogenesis and production of testosterone

Answer 2

TESTIS

Question 3

What surrounds the testis

Answer 3

Tunicae

Question 4

The parenchyma in testis is composed of

Answer 4

Seminiferous tubules with Sertoli cells

Question 5

The interstitium contains what

Answer 5

Interstitial cells of leydig

Question 6

Tunica vaginalis is composed of

Answer 6

Mesothelium and CT layer

Question 7

What is the tunica albuginea

Answer 7

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

Question 8

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

Answer 8

Septule testis

Separate seminiferous tubules

Question 9

The Leydig cells are located where

Answer 9

Between seminiferous tubules

Question 10

Seminiferous tubules are composed of

Answer 10

Spermatogenic epithelium

Question 11

Spermatogenic epithelium is surrounded by

Answer 11

Lamina propia of collagen and elastic fibers

Question 12

What is spermatogonia (2)

Answer 12

Most immature spermatogenic cells

Small round cells with dark round nuclei

Question 13

Where is the spermatogonia (by what)

Answer 13

Lie next to basement membrane

Question 14

Seminiferous tubules cells are lined by

Answer 14

Spermatogenic cells and sertoli cells

Question 15

Formation of spermatids

Answer 15

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

Question 16

What are spermatids

Answer 16

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

Question 17

T or F

Spermatids in the seminiferous lumen are in IMMOTILE state

Answer 17

TRUE

Question 18

Where are Myoid cells located

Answer 18

Outside basement membrane of each tubule

Question 19

Function of Myoid cells

Answer 19

Move spermatozoa out of tubules

Question 20

Spermatic pathway (8)

Answer 20

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

Question 21

Sertoli cells are characterized by

Answer 21

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

Question 22

Functions of sertolli cells (7)

Answer 22

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

Question 23

The hormone inhibin function

Answer 23

Suppress secretion of FSH

Question 24

Leydig cells secrete

Answer 24

Testosterone

Question 25

Leydig cells are controlled by what hormone

Answer 25

LH

Question 26

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

Answer 26

TESTOSTERONE

Question 27

Anabolic effect of testosterone

Answer 27

Stimulate growth of skeletal muscles and bone

Question 28

What is the vascular supply of testis | arterial supply and venous drainage

Answer 28

EPIDIDYMIS

Question 29

Spermatic cord is composed of (4)

Answer 29

Testicular artery Testicular vein Lymphatic Ductus Referents

Question 30

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

Answer 30

RETE TESTIS

Question 31

Seminiferous tubules empty into (5)

Answer 31

``` Straight tubules Rete testis Epididymis Epididymal duct Ductus deferens ```

Question 32

The efferent ductules of Epididymis

Answer 32

Connect the epididymal duct in the head of epididymis

Question 33

Epididymal duct is

Answer 33

A single long coiled tubule: pseudostratifies epithelium with stereocilia

Question 34

Main function of epididymal duct

Answer 34

Fluid reabsorption and secretion of glycerophosphocholine

Question 35

What site of the epididymal duct is used for sperm storage

Answer 35

TAIL

Question 36

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

Answer 36

Ductus deferens

Question 37

Accessory sex glands (4)

Answer 37

Bulbourethral glands Prostate glands Ampullatory glands Vesicular glands

Question 38

What do the accessory sex glands have in common

Answer 38

They're all tubuloalveolar

Question 39

Vesicular glands/ seminal vesicles produce

Answer 39

Fructose which is the source of energy for sperm cells

Question 40

What is the prostate

Answer 40

Multilobulated gland that surrounds the prostatic urethra

Question 41

Prostate Gland (3)

Answer 41

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

Question 42

Bulbourethral glands empty into

Answer 42

pelvic urethra

Question 43

Penis consist 1ry of what

Answer 43

Erectile tissue and urethra

Question 44

What is the corpora cavenosa

Answer 44

Paired masses of erectile tissues

Question 45

What is the corpus spongiosum

Answer 45

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

Question 46

Portions of the male urethra (3)

Answer 46

Prostatic Pelvic Penile