Exam III - Male Reproductive System Flashcards
Identify each arrow
top arrow = head of the epididymis
bottom arrow = tail of the epididymis
What is occuring in this image?
Mesothelioma (bovine)
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?
The top portion is the tunica vaginalis. (below that is the tunica albuginea)
Septule testis separate the seminiferous tubules.
Identify the large structures in this image. What are the cells that lie between these structures.
Seminiferous tubules. Interstitial (Leydig) cells lie in the interstitial space between the seminiferous tubules.
What are we looking at here?
seminoma
Label the different components on this H&E section of the testis.
A. Interstitial cells (leydig cells)
B. smooth muscle
C. sertoli cells
D. Spermatogonia
E. Spermatids
F. Primary spermatocytes
What are the functions of Sertoli cells?
To Support, protect, nourish spermatogenic cells.
To secrete supporting testicular fluid
to protect spermatids from the immune system
Sertoli cells have receptors for _________, resulting in the release of ____________.
FSH, Androgen binding protein (ABP)
Which cells release the hormone inhibin?
What does inhibin do?
Sertoli cells. Inhibin supresses the function of FSH (inhibits FSH)
In the case of a Sertoli cell tumor, sertoli cells begin producing __________ in excess.
estrogen
Identify the arrows. What do these cells secrete?
Interstitial (Leydig) cells. Testosterone.
Which cells produce testosterone?
Leydig cells
What are we looking at here?
Interstitial (Leydig) cell tumor
Label the different parts.
A. Pampiniform Plexus
B. Epididymal Head
C. Testicular Parenchyma
D. Mediastinum
E. Epididymal Tail
What are we looking at in this image?
Rete testis. (lined by a single layer of cells)
What are the structures labeled t and v
t = tubuloalveolar glands (empty secretions into the alveolar ducts)
v = vesicular glands (seminal vesicles)
What do the vesicular glands (seminal vesicles) produce?
they produce fructose, the main source of energy for the sperm cell
What are we looking at here?
prostate
What the hell happened here?
prostatic hyperplasia
Identify the image. What does m represent?
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
paired masses of erectile tissue are called _________
corpora cavernosa
the single mass of erectile tissue surrounding the urethra is called ___________
corpus spongiosum (this is much more delicate than corpus cavernosum)
Identify.
Disseminated prostate gland
What is the name of the structure in the tunica albuginea that separates the seminiferous tubules?
septule testis
What is the flow of the spermatic pathway?
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
What is the spermatic cord composed of?
The spermatic cord is composed of the testicular artery (countercurrent heat exchange system), the testicular vein (countercurrent heat exchange system), lymphatics, and ductus deferens.
- testicular artery
- testicular vein
- lymphatics
- ductus deferens
