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Flashcards in Lesson 4B (Part 2) Deck (29)
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1

How many lobules are in each testis?

200-300

2

What are in each lobule?

1 to 4 convoluted loops composed of germinal epithelial cells known as seminiferous tubules

3

What are between the seminiferous tubules?

Groups of interstitial cells

4

What are interstitial cells also known as?

Cells of Leydig

5

What do the cells of Leydig do?

Secrete the hormone testosterone after puberty

6

What happens at the upper pole of the testis?

The tubules combine to form a single tubule

7

How long are the tubules?

6m
- repeatedly folded and tightly packed into a mass

8

What are the repeatedly folded and tightly packed into a mass known as?

Epididymis

9

How does the sperm leave the epididymis?

Through the vas deferences in the spermatic cord

10

What passes through the spermatic cord? (2)

1. Blood vessels
2. Lymph vessels

11

Mediastinum testis

Mass of connective tissue at the back of the testis that
encloses the rete testis

12

Rete testis

A network formed in the mediastinum testis by the seminiferous
tubules

13

How is the epididymis presented?

Single, tightly coiled tube enclosed in a fibrous casing

14

Where is the epididymis located?

Lies along the top and behind the testis

15

What are the 3 parts of the epididymis?

1. Head
2. Body
3. Tail

16

What is head of the epididymis connected tot eh testis by?

The efferent ductules

17

What is the tapered inferior portion of the epididymis continuous with?

The vas deferens

18

What are 2 embryological remnants that are found toward the superior pole of the testis?

1. Appendix testis
2. Appendix epididymis

19

What is the vas deferens also called?

Ductus deferens

20

Where does the vas defererens extend from?

The tail of the epididymis

21

How can the palpation of the vas deferens be classified as? (3)

1. Smooth
2. Moveable chord
3. Thick muscular walls

22

What does the vas deferens do?

Help in propelling sperm through the duct system

23

Where does the vas deferens go? (2)

1. Ascends from the scrotum and passes through the inguinal canal as part of the spermatic cord
2. Extends over the top and down the posterior surface of the bladder

24

What does the ampulla do?

Joins the duct from the seminal vesicle to form the ejaculatory duct

25

What suspends the testes in the scrotum?

The spermatic cords

26

What does each spermatic cord contain? (5)

1. A testicular artery
2. Testicular veins
3. Lymphatics
4. A deferent duct
5. Testicular nerves

27

What is the spermatic cord covered by?

A sheath of smooth muscle and connective and fibrous tissues

28

Where does the spermatic cord extend through?

The inguinal canal

29

Where does the spermatic cord attach to the testis?

On the posterior wall