L8: The Male Reproductive System

Question 1

4 sex and accessory organs

Answer 1

testes
Ductal
Accessory sex glands
Supporting structures (external genitalia)

Question 2

Testes are found within the ______

Answer 2

scrotal sac

Question 3

male repro ducts

Answer 3

epididymis, vas deferens, ejaculatory duct, urethra

Question 4

Accessory glands

Answer 4

Seminal vesicles, prostate gland, bulbourethral gland

Question 5

What are the 3 accessory glands?

Answer 5

Seminal vesicles
Prostate gland
Bulbourethral gland

Question 6

The seminal vesicles have a ______ ph

Answer 6

alkaline

Question 7

Where do the seminal vesicles empty into after the vas deferens empties the sperm?

Answer 7

ejaculatory duct

Question 8

Prostoglandins prime the cervix and contract uterus and fallopian tubes to propel sperm. Prostoglandins can be wither

Answer 8

dialotory, constrictive

Question 9

The prostate gland secretes

Answer 9

milky, slightly acidic fluid

Question 10

What does prostate gland milky, slightly acidic fluid contain? 5

Answer 10

-citric acid (for ATP production of sperm)
-clotting enzymes
-proteolytic enzymes
-seminalplasmin
-acid phosphatase

Question 11

What contributes 60% of semen?

Answer 11

Seminal vesicle fluid

Question 12

What is 25% of semen?

Answer 12

Prostate gland fluid

Question 13

What is another name for the bulbourethral glands

Answer 13

Cowper’s glands

Question 14

What type of fluid does the bulbourethral gland secrete?

Answer 14

an alkaline fluid that neutralizes the acidic environment
-mucus to lubricate urethral lining and protect sperm

Question 15

Semen contains ____ (%) plus fluids from the ______ (%)

Answer 15

sperm (10%)
3 accessory glands (90%)

Question 16

Semen is sticky because of what gland?

Answer 16

Cowper’s

Question 17

Fluid and sperm from ____ combine with fluids from accessory organs

Answer 17

vas deferens

Question 18

What contributes the major volume of fluid to the semen?

Answer 18

Seminal vesicles

Question 19

HPtesticular axis

Question 20

Leydig cells

Answer 20

LH production which stimulates testosterone

Question 21

Sertoli cells

Answer 21

Inhibin

Question 22

What is the nuclei in the HPTest axis?

Answer 22

Arcuate

Question 23

What do you require to create estradiol from testosterone?

Answer 23

P450 aromatase

Question 24

What do you require to make DHT from testosterone?

Answer 24

5a-reductase

Question 25

What cells produce testosterone?

Answer 25

Leydig cells

Question 26

What are the 4 functions of testosterone/DHT?

Answer 26

Fetal development Testicular descension Pubertal enlargement of sexual organs (DHT) Secondary characteristics Body hair, muscle mass, skin thickness

Question 27

What is the smallest cell in the human body?

Answer 27

sperm cell

Question 28

Acrosome formed from golgi apparatus and contains _____ to ___

Answer 28

enzymes to penetrate ovum

Question 29

What is the normal pH of semen?

Answer 29

7-8 (slightly alkaline)

Question 30

_____ ____ surround the sperm cells inside tubular fluid (protecting ____)

Answer 30

Cholesterol vesicles, acrosome

Question 31

Once ejaculated, sperm can survive ____ days and ____

Answer 31

3-5 days, 37.5C

Question 32

Sperm cells remain inhibited until activated by

Answer 32

bodily fluids (capacitation)

Question 33

What are the 3 disorders of the male repro system

Answer 33

Hypogonadism (hypothalamic eunichism) Cryptochordism (testicular descension) Erectile dysfunction

Question 34

Hypogonadism

Answer 34

Decrease in testosterone Infantile sex organs Cause: Decrease in GnRH often associated with eating disorders

Question 35

What is the treatment for hypogonadism

Answer 35

Replace GnRH and testosterone

Question 36

Cryptochidism

Answer 36

Absence of one or both testes from the scrotum

Question 37

Treatment for crytorchidism

Answer 37

Normal descension occurs within 2-3 months

Question 38

Erectile dysfunction

Answer 38

Occurs in 50% of adult males 40-70 years Related to stress, drug use, or onset or pathophysiology (DM) Treated with drugs that target NO pathway