Testis Histology Flashcards Preview

HRM - Anatomy/Embryology/Histology > Testis Histology > Flashcards

Flashcards in Testis Histology Deck (32):
1

What tissue layer separates the lobules of the testis?

Tunica albuginea

2

What is the sac surrounding the anterior/lateral parts of the testis called?

Tunica vaginalis

3

What type of tissue makes up the visceral tunica vaginalis?

simple cuboidal epithelium

4

What tube system makes up the testicular lobules?

Seminiferous tubules

5

What are the supporting cells of the seminiferous tubules called?

Sertoli cells

6

What are the germ cells which are always associated with the basal lamina called?

Spermatogonium

7

What is the process of spermatogenesis starting with the spermatogonium?

Spermatogonium (Dark A, Pale A, B)
Primary Spermatocyte
Secondary spermatocyte
Early spermatids
Spermatozoa

8

Which germ cell do you almost never see on a slide?

Secondary spermatocyte

9

What are the three types of spermatogonia?

A light
A dark
B

10

Which spermatogonia can self renew?

Pale type A spermatogonia

11

Which are the largest of the germ cells?

Primary spermatocytes

12

What stage of development do primary spermatocytes enter? Secondary spermatocytes?

Primary: Meiosis I
Secondary: Meiosis II

13

At what point do the germ cells become haploid?

Secondary spermatocytes

14

What is the structure that is left behind by Spermiogenesis called?

Residual bodies

15

What are the three main structures of a sperm?

Head, middle piece, principle piece

16

What are the four "phases" of spermiogenesis?

Golgi phase
Cap phase
Acrosomal phase
Maturation phase

17

What are formed in the golgi phase?

Acrosomal granules

18

What forms the cap over the spermatid nucleus?

Acrosomal vescile (formed from acrosomal granules)

19

In what phase does the acrosomal vesicle fuse?

Cap phase

20

During which phase does the head of the spermatid orient toward the base?

Acrosomal phase

21

Where do mitochondria aggregate in the acrosomal phase?

Middle piece

22

What structures are indicated in helping nuclear elongation of hte sperm?

Manchettes (microtubules)

23

During which phase are the sperm released into the lumen, with the residual bodies phagocytosed?

Maturation phase

24

What is thought to be the role of the annulus in the sperm?

Keep the mitochondria in the middle piece

25

What is the immunologic role of sertoli cells?

Zonula occludens in base form blood-testis barrier

26

What are the two compartments formed by the blood-testis barrier in the seminiferous tubules?

Basal compartment
Adluminal compartment

27

What two endocrine proteins are produced by sertoli cells?

Androgen binding protein
Inhibin

28

What is the role of the interstitial cells of Leydig?

Testosterone production

29

What cytoplasmic structures are prevalent in Interstitial Cells?

Smooth ER
Large, round nuclei

30

Which cells have receptors for LH?

Interstitial cells

31

Which cells have receptors for FSH?

Sertoli cells

32

What is produced by Sertoli cells to make negative feedback on the hypothalamus FSH/LH production?

Inhibin