Male Ducts

Question 1

The spermatic cord is a bundle of fibrous CT containing 3 things:

Answer 1

Vas
Testicular artery
Testicular nerves

Question 2

Where does the spermatic cord travel?

Answer 2

It passes upwards, behind, and superior to the testes, where it is easily palpated
It continues into the inguinal canal (4cm) and into the pelvic cavity

Question 3

What do the testes produce?

Answer 3

Sperm and testosterone

Question 4

The testis is made up of ______ formed from _____ extensions of the white fibrous capsule

Answer 4

lobules

septal

Question 5

What is the capsule of the testis called?

Answer 5

tunica albuginea

Question 6

How many lobules does each testis have?

Answer 6

250-300

Question 7

Each testicular lobule has 1-3 _______ ________.

Answer 7

Seminiferous tubules

Question 8

Describe the seminiferous tubule

Answer 8

70 cm long, tightly coiled

Question 9

What do seminiferous tubules do?

Answer 9

Produce sperm

Question 10

What 3 kinds of cells are in the testis?

Answer 10

Spermatogenic cells
Sertoli cells
Interstitial cells of Leydig

Question 11

How many stages of progression do spermatogenic cells go through?

Answer 11

5

Question 12

What is the first stage of spermatogenisis?

Answer 12

1- Spermatogonia: 2n Type A- Keep diving; Type B move to next stage

Question 13

What are the second and third steps for a Type B spermatogenic cell?

Answer 13

2- Primary spermatocyte- 2n (diploid)

3- Secondary spermatocyte- 1n (haploid)

Question 14

What are the last 2 steps in spermatogenesis?

Answer 14

4- Spermatid- 1n

5- Spermatozoa (sperm) 1n; Haploid

Question 15

Which cell Support and protect developing sperm cells and nourishes them?

Answer 15

Sertoli cells

Question 16

Sertoli cells phagocytize any excess _________

Answer 16

cytoplasm

Question 17

Why do Sertoli keep the immune systems away?

Answer 17

Because body doesn’t recognize haploid cells

Question 18

What is the BTB? What happens if it fails?

Answer 18

Tight junctions between sertoli cells keep/prevent antibodies and phagocytes from the area, if fails→ sterility

Question 19

What do interstitial cells of Leydig do? Where are they?

Answer 19

In between seminiferous tubules, are clusters of cells that produce testosterone

Question 20

What are the three parts of the sperm?

Answer 20

Head. midpiece piece, tail

Question 21

What does the head of the sperm contain?

Answer 21

DNA

Question 22

What covers the head of the sperm? What purpose does this serve?

Answer 22

Is covered with the acrosome, a dense cap containing enzyme to penetrate the protective layers of the egg

Question 23

What does the midpiece piece of the sperm do?

Answer 23

Contains tightly spiraled mitochondria that provide ATP for motility

Question 24

What does the tail of the sperm do?

Answer 24

A flagellum to propel the sperm

Question 25

What is capacitation for sperm?

Answer 25

A structural change in sperm, cannot fertilize until this occurs in female tract

Question 26

How is male report innervated?

Answer 26

Erection is PNS, ejaculation is SNS “Point and Shoot”

Question 27

What are the parts of the penis?

Answer 27

Consists of root, shaft, and the glans penis (enlarged tip)

Covered by a thin, loose layer of skin- ant. portion is sometimes removed

Question 28

The penis contains the ______ urethra and 3 long, cylindrical bodies (________) of erectile tissue

Answer 28

spongy

corpora

Question 29

What are the corpora of the penis?

Answer 29

1 mid ventral corpus spongiosum, the smallest, surrounds the urethra, ends as glans
2 dorsal corpora cavernosa

Question 30

What happens to the corpora of the penis?

Answer 30

The three fill with blood during sexual arousal