Male Reproductive System

Question 1

Answer 1

Question 2

Answer 2

• *Seminiferous tubule** – exocrine component of testis (spermatogenesis - production of sperm).
• *Interstitium** – endocrine component (synthesis of testosteron).

Question 3

Answer 3

Question 4

Answer 4

Interstitium consists of:

• *Loose connective tissue** (fibroblasts, macrophages, collagen fibers, blood vessels, nerves)
• *Leydig cells** (synthesis of testosterone)

Question 5

Answer 5

Seminiferous epithelium:
Spermatogonia – relatively small cells, condensed chromatin, rest on the basal lamina
Spermatocytes – the biggest cells of seminiferous epithelium, big granulated nucleus
Spermatids – small cells with dark heterochromatin
Mature sperm – head, neck, tail (spermatids differentiate into mature sperm by
process of spermiogenesis)
Sertoli cells (sustentacular cells) – cylindrical or pyramid shaped cells,
extend from basal lamina to lumen of seminiferous tubule.
The Certoli cell-to-Certoli cell junctional complex between spermatogonia
and spermatocytes is the site of the blood-testis barrier.

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Mucosa:
Lamina epithelialis mucosa – pseudostratified columnar epithelium
Lamina propria mucosa – scarce fibroblasts and collagen fibers
Smooth muscle - myocytes
Adventitia – irregular dense connective tissue, blood vessels, nerves

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Mucosa:
Lamina epithelialis mucosa – pseudostratified columnar epithelium
Lamina propria mucosa – loose connective tissue with big amount of elastic fibers
Smooth muscle – three layers of myocytes
Adventitia – loose connective tissue, blood vessels, nerves
Proximal part of ductus deferens is thicker than distal part (ampulla of ductus
deferens that is joined by the duct of seminal vesicle)

Question 12

Answer 12

Question 13

Answer 13

Mucosa:

• *Lamina epithelialis mucosa** – cuboidal epithelium (viscous alkaline secretion with fructose is secreted – energy for mature sperm motility)
• *Lamina propria mucosa** – loose connective tissue
• *Smooth muscle** – thick wall made of myocytes
• *Adventitia** – loose connective tissue, blood vessels, nerves

Question 14

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Stroma:
Capsule and septa – dense connective tissue
Parenchyma:
Conglomerate of tubuloalveolar glands – simple collumnar glandular epithelium (synthesis of prostatic secretion)
Fibromuscular stroma – dense irregular connective tissue with smooth muscle fibers
The alveoli of the prostatic glands often contain prostatic
concretions (corpora amylacea, symplexion).

Question 17

Answer 17