Repro 3

Question 1

environmental estrogens

Answer 1

• can bind and activate estrogen receptors

- some are anti-estrogen that interfere with second messenger pathways

Question 2

testes

Answer 2

produce hormones and gametes

Question 3

Which accessory glands contribute secretions to semen?

Answer 3

• seminal vesicle
• prostate gland
• bulbourethral gland

Question 4

components? of the penis

Answer 4

-urethra, corpus spongiosum, corpora cavernosa, glans, prepuce (foreskin)

Question 5

cryptorchidism

Answer 5

a condition in which one or both of the testes fail to descend from the abdomen to the scrotum

Question 6

One of the most common form of cancer in men..

Answer 6

prostate cancer

Question 7

benign prostatic hypertrophy

Answer 7

a problem in many men over 50

Question 8

finasteride

Answer 8

5a-reductase inhibitor that blocks DHT production, shrinking hypertrophied prostate

Question 9

seminiferous tubule

Answer 9

• site of sperm production
• 400-600 in testis, making up 80% of mass
• 0.3-1 meter long EACH damn

Question 10

______________ with ________ and__________ lie between seminiferous tubules.

Answer 10

interstitial tissues, blood vessels, leading cells

Question 11

_____ cells lie between stacks of spermatocytes

Answer 11

sertoli

Question 12

leydig cells

Answer 12

found in interstitial tissue of seminiferous tubule and produce testosterone during development and again after puberty

Question 13

sertoli cells

Answer 13

• contain tight junctions forming a blood-testis barrier between tubule lumen and interstitial space
• regulate sperm development
• provide sustenance or nourishment
• produce a variety of substances

Question 14

Describe sperm production

Answer 14

spermatogonium reside inside basal lamina of seminiferous tubules

• some enter meiosis to become spermatocytes
• spermatocytes differentiate to sperm as they move toward tubule lumen

Question 15

Spermatids remain embedded in apical membrane of sertoli cells while completing transformation and they…

Answer 15

• lose most of their cytoplasm

- develop flagellated tail

Question 16

a sperm consists of..

Answer 16

a head with enzymes and DNA, a long tail, and mitochondria

Question 17

Sperm mature in the..

Answer 17

epididymis

Question 18

FSH during spermatogenesis

Answer 18

bind to receptors on sertoli cells,causing them to generate paracrine molecules needed for spermatogonia mitosis and spermatogenesis
-also produce ABP and inhibin

Question 19

LH during spermatogenesis

Answer 19

targets interstitial leydig cells, resulting in production of testosterone

Question 20

Accessory gland secretions that are mixed in with sperm to form semen include:

Answer 20

• nutrients
• buffers
• chemicals to increase sperm motility
• prostaglandins
• immunoglobulins, lysozyme, and other antibacterial compounds

Question 21

primary sex characteristics

Answer 21

internal sex organs, external genitalia that differentiate male

Question 22

secondary sex characteristics

Answer 22

facial/body hair growth, muscle, voice, behaviour