Lesson 4B (Part 2)

Question 1

How many lobules are in each testis?

Answer 1

200-300

Question 2

What are in each lobule?

Answer 2

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

Question 3

What are between the seminiferous tubules?

Answer 3

Groups of interstitial cells

Question 4

What are interstitial cells also known as?

Answer 4

Cells of Leydig

Question 5

What do the cells of Leydig do?

Answer 5

Secrete the hormone testosterone after puberty

Question 6

What happens at the upper pole of the testis?

Answer 6

The tubules combine to form a single tubule

Question 7

How long are the tubules?

Answer 7

6m

- repeatedly folded and tightly packed into a mass

Question 8

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

Answer 8

Epididymis

Question 9

How does the sperm leave the epididymis?

Answer 9

Through the vas deferences in the spermatic cord

Question 10

What passes through the spermatic cord? (2)

Answer 10

1. Blood vessels

2. Lymph vessels

Question 11

Mediastinumtestis

Answer 11

Mass of connective tissue at the back of the testis that

encloses the rete testis

Question 12

Rete testis

Answer 12

A network formed in the mediastinum testis by the seminiferous
tubules

Question 13

How is the epididymis presented?

Answer 13

Single, tightly coiled tube enclosed in a fibrous casing

Question 14

Where is the epididymis located?

Answer 14

Lies along the top and behind the testis

Question 15

What are the 3 parts of the epididymis?

Answer 15

1. Head
2. Body
3. Tail

Question 16

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

Answer 16

The efferent ductules

Question 17

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

Answer 17

The vas deferens

Question 18

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

Answer 18

1. Appendix testis

2. Appendix epididymis

Question 19

What is the vas deferens also called?

Answer 19

Ductus deferens

Question 20

Where does the vas defererens extend from?

Answer 20

The tail of the epididymis

Question 21

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

Answer 21

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

Question 22

What does the vas deferens do?

Answer 22

Help in propelling sperm through the duct system

Question 23

Where does the vas deferens go? (2)

Answer 23

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

Question 24

What does the ampulla do?

Answer 24

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

Question 25

What suspends the testes in the scrotum?

Answer 25

The spermatic cords

Question 26

What does each spermatic cord contain? (5)

Answer 26

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

Question 27

What is the spermatic cord covered by?

Answer 27

A sheath of smooth muscle and connective and fibrous tissues

Question 28

Where does the spermatic cord extend through?

Answer 28

The inguinal canal

Question 29

Where does the spermatic cord attach to the testis?

Answer 29

On the posterior wall