Exam III - Male Reproductive System

Question 1

Identify each arrow

Answer 1

top arrow = head of the epididymis

bottom arrow = tail of the epididymis

Question 2

What is occuring in this image?

Answer 2

Mesothelioma (bovine)

Question 3

Identify the top (pink) portion of this image. In the bottom portion, what do we call the CT trabeculae that are separating the seminiferous tubules?

Answer 3

The top portion is the tunica vaginalis. (below that is the tunica albuginea)

Septule testis separate the seminiferous tubules.

Question 4

Identify the large structures in this image. What are the cells that lie between these structures.

Answer 4

Seminiferous tubules. Interstitial (Leydig) cells lie in the interstitial space between the seminiferous tubules.

Question 5

What are we looking at here?

Answer 5

seminoma

Question 6

Label the different components on this H&E section of the testis.

Answer 6

A. Interstitial cells (leydig cells)

B. smooth muscle

C. sertoli cells

D. Spermatogonia

E. Spermatids

F. Primary spermatocytes

Question 7

What are the functions of Sertoli cells?

Answer 7

To Support, protect, nourish spermatogenic cells.

To secrete supporting testicular fluid

to protect spermatids from the immune system

Question 8

Sertoli cells have receptors for _________, resulting in the release of ____________.

Answer 8

FSH, Androgen binding protein (ABP)

Question 9

Which cells release the hormone inhibin?

What does inhibin do?

Answer 9

Sertoli cells. Inhibin supresses the function of FSH (inhibits FSH)

Question 10

In the case of a Sertoli cell tumor, sertoli cells begin producing __________ in excess.

Answer 10

estrogen

Question 11

Identify the arrows. What do these cells secrete?

Answer 11

Interstitial (Leydig) cells. Testosterone.

Question 12

Which cells produce testosterone?

Answer 12

Leydig cells

Question 13

What are we looking at here?

Answer 13

Interstitial (Leydig) cell tumor

Question 14

Label the different parts.

Answer 14

A. Pampiniform Plexus

B. Epididymal Head

C. Testicular Parenchyma

D. Mediastinum

E. Epididymal Tail

Question 15

What are we looking at in this image?

Answer 15

Rete testis. (lined by a single layer of cells)

Question 16

What are the structures labeled t and v

Answer 16

t = tubuloalveolar glands (empty secretions into the alveolar ducts)

v = vesicular glands (seminal vesicles)

Question 17

What do the vesicular glands (seminal vesicles) produce?

Answer 17

they produce fructose, the main source of energy for the sperm cell

Question 18

What are we looking at here?

Answer 18

prostate

Question 19

What the hell happened here?

Answer 19

prostatic hyperplasia

Question 20

Identify the image. What does m represent?

Answer 20

bulbourethral glands.

m is mucous secretions. acts as a lubricant in the urethra. This is also what is responsible for the vacuolated, empty-looking cell

Question 21

paired masses of erectile tissue are called _________

Answer 21

corpora cavernosa

Question 22

the single mass of erectile tissue surrounding the urethra is called ___________

Answer 22

corpus spongiosum (this is much more delicate than corpus cavernosum)

Question 23

Identify.

Answer 23

Disseminated prostate gland

Question 24

What is the name of the structure in the tunica albuginea that separates the seminiferous tubules?

Answer 24

septule testis

Question 25

What is the flow of the spermatic pathway?

Answer 25

seminiferous tubules -> tubuli recti -> rete testis -> efferent ductules (head of the epididymis) -> epididymal duct -> ductus deferens -> pelvic urethra -> penile urethra

Sperm Travels Really Efficiently, Especially Down Penelope’s Pectorals

Question 26

What is the spermatic cord composed of?

Answer 26

The spermatic cord is composed of the **testicular artery **(countercurrent heat exchange system), the testicular vein (countercurrent heat exchange system), lymphatics, and ductus deferens.

1. testicular artery
2. testicular vein
3. lymphatics
4. ductus deferens