Histology of the Male Reproductive Tract Flashcards Preview

ESA 4 - Reproductive System > Histology of the Male Reproductive Tract > Flashcards

Flashcards in Histology of the Male Reproductive Tract Deck (33):
1

Label this diagram 

  • C - Capsule
  • ST - Seminiferous tubule
  • R - Rete testis
  • DE - Efferent ducts
  • H - Head of epididymis
  • B - Body of epididymis
  • T - Tail of epididymis
  • V - Vas deferens

2

Label this histograph

  • L - Leydig cells
  • G - Cells of the germ cell lineage
  • S - Sertoli cells

3

What does the seminiferous epithelium consist of? 

Two cell types; 

  • Sertoli cells
  • Cells of the germ cell lineage

 

4

What do the sertoli cells form? 

The blood-testis environment 

5

What is the importance of the blood-testis environment? 

It provides a safe environment for spermatogenesis

6

Why is it important that there is a safe environment for spermatogenesis? 

Ensures the integrity of the next generation

7

Where are cells of the germ cell lineage found in the seminiferous tubules? 

Embedded in sertoli cells

8

Where are leydig cells found? 

Interspersed in connective tissue islands, between (but seperated from) seminiferous tubules

9

What is the function of Leydig cells? 

Secrete testosterone

10

Why are tumours of the testis very important? 

Because they are a high proportion of tumours seen in early life

11

What % of testicular neoplasms are germ cell tumours? 

90-95%

12

What do seminiferous tubules converge on? 

Rete testis

13

How do seminiferous tubules converge onto rete testis? 

Via tubuli recti

14

Describe the histological features of the rete testis? 

Simple cuboidal epithelium 

15

What is the function of the rete testis? 

Provides exit to the duct system for male germ cells

16

What does the efferent duct connect? 

The rete testis with the head of the epididymis

17

What are the histological features of the efferent duct?

Characteristic scalloped epithelium 

18

Label this histogram of the efferent duct

  • C - Cilia
  • M - Myoid cells

19

What contributes to sperm transport in the rete testis? 

Combined ciliary and myoid contraction 

20

What control is myoid contraction in the efferent duct under? 

Autonomic

21

Why is it important that the efferent duct has mechanisms to aid motility? 

Transports sperm until they develop independent motility 

22

What is the vas deferens? 

A four layered tube that connects the epididymis to the ejaculatory duct

23

What are the layers of the vas deferens?

  • Epithelium
  • 3 layers of smooth muscle

 

24

What kind of epithelium does the vas deferens have? 

Psuedostratified columnar

25

What are the layers of smooth muscle in the vas deferens? 

Longitudinal -> Circular -> Longitudinal

26

What happens to the smooth muscle of the vas deferens during ejaculation? 

It contracts under autonomic control to propel gametes out of the tract

27

What kind of epithelium does the seminal vesicle have? 

Secretory epithelium 

28

What kind of muscle is found in the seminal vesicle? 

Smooth muscle layer

29

Under what control is the smooth muscle layer of the seminal vesicle? 

Autonomic

30

What is the purpose of the smooth muscle layer of the seminal vesicle? 

Sympathetic innervation enables discharge of contents into duct

31

What are the histological features of the prostate? 

  • 30-50 tubulo-alveolar glands draining into prostatic urethra
  • Ejaculatory ducts merge with urethra within the prostate
  • Characteristic fibromuscular stroma

 

32

What are the most common prostatic disorders?

  • Benign prostatic hypertrophy
  • Prostatic adenocarcinoma

 

 

33

What does prostatic adenocarcinoma give rise to histologically? 

Loss of normal architecture