Male Reproductive

Question 1

What three types of cells are in seminiferous tubules, and what do they do?

Answer 1

Peritubular(stim by testosterone, produce TGb), sertoli(stim by TGb and FSH), and germ cells(produce sperm)

Question 2

What cells form the blood testis barrier and what do they produce?

Answer 2

Tight junctions of sertoli cells( also have gap). Produce AMH, inhibin, ABP, estrogen. Fluid for sperm transport

Question 3

What cells produce testosterone, and where are they?

Answer 3

Leydig cells, in the interstitial space between seminiferous tubules

Question 4

Steps of spermatogenesis and major facts?

Answer 4

Spermatogonia(stem cells). Primary spermatocyte(diploid, meiosis one). Secondary (haploid, meiosis 2). Round spermatids(no division, produce acrosome and flagella) spermatozoa, develops in tubule

Question 5

What two hormones impact spermatogenesis?

Answer 5

FSH and testosterone on Sertoli cells

Question 6

What is the major function of the epididymis?

Answer 6

Store sperm and produce factor to mature them

Question 7

What is the purpose of a seminal vesicle?

Answer 7

Make most of ejaculate and fructose for sperm energy

Question 8

Is cytokinesis complete in spermatogenesis?

Answer 8

No

Question 9

Steps of testosterone production? What is rate limiting?

Answer 9

LH binds leydig, activates StARD1, moving cholesterol from outer to inner mitochondrial membrane(rate limiting). Cholesterol to pregnelone, to progesterone to testosterone

Question 10

Do seminal vesicles have highly folded mucosa?

Answer 10

Yes

Question 11

What cells do epididymis have?

Answer 11

Pseudostratified columnar and smooth muscle.

Question 12

What does the prostate look like?

Answer 12

Cuboidal with exocrine glands. And concretions. Secretions affect sperm motility

Question 13

What are the three portions of ejaculate in order?

Answer 13

Sperm, prostate, seminal vesicle