male reprodactive system

Question 1

The male reproductive system consists of ?

classification

Answer 1

primary : testes, genital ducts
accessory genital glands : seminal vesicles, prostate gland, and
bulbourethral glands), and the penis.

Question 2

function of the reprodactive system ?

Answer 2

the male reproductive system produces
spermatozoa (sperm), testosterone, and seminal
fluid.

Question 3

what is ( Testicular tunicae (covering of the testes) ) ?

Answer 3

1. The tunica vaginalis is a serous sac derived from the peritoneum that partially covers the anterior and lateral surfaces of each testis.
2. Tunica albuginea
   The lobuli testes are pyramidal intercommunicating compartments that are separated by incomplete septa.

Each contains 1 to 4 seminiferous tubules.

Question 4

what is seminiferous tubules.?

Answer 4

Seminiferous tubules are 30 to 70 cm long, with a diameter of 150 to 250 m.
They are lined by a thick complex epithelium (seminiferous or germinal epithelium). This epithelium consists of four to eight cell layers and contains spermatogenic cells, from which the germ cells eventually develop (spermatogenesis), and Sertoli cells

Question 5

explain the Spermatogenesis ?

Answer 5

its take 74 days 
 and  4 phases
 1) Reproduction
2) Growth
3) Maturation
4) Spermiogenesis

Question 6

explain the Spermiogenesis ?

Answer 6

it has 4 phases

a. Golgi phase
b. Cap phase
c. Acrosomal phase
d. Maturation phase

Question 7

function of Sertoli cells

Answer 7

(1) Sertoli cells support, protect, and nourish the
spermatogenic cells.
(2) They phagocytose excess cytoplasm discarded by
maturing spermatids.
(3) They secrete a fructose-rich fluid into the lumen that
nourishes and facilitates the
transport of spermatozoa through the seminiferous
tubules to the genital ducts.
(4) They synthesize androgen-binding protein (ABP) under
the influence of FSH. ABP
(5) They establish a blood-testis barrier
(6) They secrete inhibin, a hormone that inhibits the
synthesis and release of FSH by
the anterior pituitary.

Question 8

what the blood testes barrier contain ?

Answer 8

1- endothelium of capillary
2-nesment membrane of capillary
3- connective tissue 
4- basement membrane of spermatoginc  epthileuim
5- tight J. of Sertoli cell

Question 9

what is the Leydig cells ?

Answer 9

Interstitial cells of Leydig are endocrine cells that produce and secrete testosterone.
Secretion is stimulated by luteinizing hormone produced in the pituitary gland. These cells mature and begin to secrete during puberty

Question 10

ACCESSORY GENITAL GLANDS ?

Answer 10

Seminal vesicles
Prostate gland
Bulbourethral (Cowper) glands

Question 11

explain Prostate gland ?

Answer 11

it consists of 30 to 50 discrete branched
tubuloalveolar glands that empty their contents via excretory ducts into the prostatic urethra.
These glands are arranged in three concentric layers
(mucosal, submucosal, and main) around the urethra.

The gland is covered by a fibroelastic
capsule that contains smooth muscle. Septa from the capsule penetrate the gland and divide it into lobes.

Question 12

explain the Bulbourethral (Cowper) glands ? +

Answer 12

1. Bulbourethral glands are adjacent to the membranous urethra.
2. They empty their secretion into the lumen of the membranous urethra to lubricate it.
3. They are lined by a simple cuboidal or columnar epithelium.
4. They are surrounded by a fibroelastic capsule containing smooth and
   skeletal muscle

Question 13

explain Seminal vesicles ?

Answer 13

1. Epithelium of the seminal vesicles is pseudostratified columnar
   testosterone levels; it lines the extensively folded mucosa. It contains many yellow lipochrome pigment granules and secretory granules,
2. The lamina propria consists of fibroelastic connective tissue surrounded by an inner circular and outer longitudinal layer of smooth muscle.
3. The adventitia is composed of fibroelastic connective tissue.
4. The seminal vesicles secrete a yellow, viscous fluid containing substances that activate