Male Reproductive Histology Flashcards
What structure(s) is responsible for sperm and androgen production?
Testes
What structure(s) is responsible for sperm transport?
Epididymis
Vas Deferens
Ejactulatory duct
Urethra
What structure(s) is responsible for semen production and a source of sperm nutrients?
Seminal Vesicle
Prostate Gland
Bulbourethral gland
What structure(s) is a copulatory organ with erectile tissue?
Penis
The testes are a paired organ located in thescrotum. They have a dense CT capsule called the Tunica albuginea, which thickens posteriorly to form what?
A. Outer parietal layer of Tunica Vaginalis
B. Inner visceral layer of Tunica Vaginalis
C. Mediastinum testes
D. Epididymis
Mediastinum testes
Identify the images A-E.
Indicate the structure that is derived from peritoneum.
A. Head of epididymis
B. Tunica Albuginea
C. Tunica Vaginalis- peritoneum derived
D. Rete Testis
E. Body of Epididymis
What structure is found with in septally formed lobules?
What cells can you find contained within the lobules?
What cells will you find between the structure in question?
Seminiferous Tubules
(lined with specialized seminiferous epithelium)
Sertoli Cells and Spermatogenic cells
cells of Leydig
Identify the indicated structures
Which ones have contractile capabilities
A: Sertoli Cells
B. Early spermatids
C: Late spermatids
D: Spermatagonia
E: Peritubular myoid cells
Which of the following structures is the source of testosterone?
B
cells of leydig
SEminiferous epithelium is stratified epithelium with unusual characteristics as it houses sertoli cells and spermatogenic cells. Which of the following is true of these cells?
A. Sertoli cells are columnar with no nucleus
B. Most immature spermatogonia are found on basal lamina
C. Most mature spermatids are attached to the basal portion of sertoli cells
D. Most immature spermatogonia are found inear tubular lumen
A. Sertoli cells are columnar with no nucleus - cyclops nucleus
B. Most immature spermatogonia are found on basal lamina
C. Most mature spermatids are attached to the basal portion of sertoli cells - apical portion of sertoli cells
D. Most immature spermatogonia are found inear tubular lumen - most mature spermatids
Which of the following cells forms a blood testis barrier via fusion of their basolateral membranes, and phagocytosis residual bodies of spermatogenic cells?
A
sertoli cells
What letter indicates the most likely location of the Blood Testis Barrier?
C
Which of the following is able to generate copies of itself and differentiate into another type of spermatogonia that can enter meiotic prophase?
A. Type A spermatogonia
B. Type B spermatogonia
C. Type C spermatogonia
D. Type D spermatogonia
Type A spermatogonia
basically a stem cell
NOTE: Type B are the ones that can enter meiotic prophase as primary spermatocytes
Which of the following spermatogenic cells can be found both above and below the blood testis barrier?
A. Type A spermatogonia
B. Type B spermatogonia
C. Primary Spermatocytes
D. Secondary spermatocytes
E. Spermatids
Primary spermatocytes
- primary (early) spermatocytes must pass through the junctional complex made by ertoli cells to move from basal to adluminal compartment
T/F: The blood testis barrier acts to isolate haploid germ cells (secondary spermatocytes, spermatids, and sperm) from system circulation
True
Which of the following are most likely to be housed in the apical crypts of Sertoli cells?
A. Round (early) spermatids
B. Elongated (late) spermatids
C. Residual bodies
D. Mature Functional sperm
Elongated (late) spermatids
NOTE: Round (early) spermatids are housed in niches of sertoli cells
What is the name of the process in which mature spermatids are released (intracellular bridges –> residual bodies –> lost and mature spermatid are seperated)?
A. Spermatogenesis
B. Ejaculation
C. Spermiation
D. Spermatozoaction
Spermiation
What portion of the sperm contains mitochondria?
A. Head
B. Neck
C. Middle Piece
D. Principle piece
E. End piece
A. Head - contains flat elongated nucleus
B. Neck
C. Middle Piece
D. Principle piece- longest piece
E. End piece
What is the sperm transport pathway starting from the straight tubules?
Straight Tubules
Rete Testis
Efferent ductules
Epidiymis
Ductus Deferens
Ejaculatory duct
S REEDE
After what sperm transport pathway structure do you only see pseudostratified columnar with decreasing amounts of stereocilia?
A. After straight tubulues
B. After Rete testis
C. After efferent ductules
D. After epididymis
C. After efferent ductules
The epididymis is a highly coiled, long duct where sperm mature, and is comprised of a head, body and tail with thin, circular smooth muscle layers. In what region can you find an additional inner and outer layer of longitudinal smooth muscle?
A. Head
B. Body
C. Tail
D. No where
Tail
What structure is depicted?
A. Efferent ductules
B. Epididymis
C. Rete Testis
D. Ductus Deferens
Epididymis
- pseudostratified epithlium with long stereocilia
What structure is depicted?
A. Rete Testis
B. Epididymis
C. Ductus Deferens
D. Ejaculatory Duct
C. Ductus Deferens
- external layer consists of loos CT and adipocytes
Which of the following portions of the ductus deferens leads directly into the prostate gland?
A. Ampulla
B. Distal end
C. Proximal End
D. None of the above
Ampulla
NOTE: Distal end receives the ducts of the seminal vesicle which forms the ejaculatory duct
Look at this
Cool
What accessory glands produce majority of seminal fluid and are regulated bu T and DHT?
A. Seminal vesicles and bulbourethral gland
B. Prostate and urethral gland
C. Bulbourethral glands and urethral gland
D. Prostate gland and seminal vesicles
Prostate gland and seminal vesicles
Name the 3 accessory glands currently depicted?
What is the order of the zones that make up the prostate gland in order of smallest/closest to urethra to largest and longest ducts of periurethral glands?
Transition zone
Central zone
Peripheral zone
What part of the urethra marks the end site of the prostatic ducts and ejaculatory ducts?
A. Intramural part
B. Prostatic part
C. Membranous part
D. Penile/Spongy part
Prostatic part
What is the name of the hallmark feature of the prostate, that is rich in glycoproteins and Calcium deposits?
Concretion (Corpora Amylacea)
What accessory gland produces a Zn-rich alkaline fluid?
A. Seminal Vesicles
B. Prostate Gland
C. Bulbourethral gland
D. Urethral Gland
Prostate Gland
seminal vesicles- fructose and prostaglandin rich
bulbourethral- mucus rich
What accessory gland is meant to secrete fluid that lubricates the penile urethra and neutralize traces of acidic urine?
What cell type is it lined with?
Bulbourethral gland
Simple columnar
The glans penis is part of what portion of the penis?
A. Right Corpus cavernosa
B. Left corpus cavernosum
C. ventral corpus spongiosum
D. Right and Left corpora cavernosa
ventral corpus spongiosum
Which part of the penis is surrounded by the tunica albuginea?
A. Right Corpus cavernosa
B. Left corpus cavernosum
C. ventral corpus spongiosum
D. Right and Left corpora cavernosa
Right and Left corpora cavernosa
Look at this picture
Cool
Select all of the following cells that are diploid (46 chromosomes)
A. Type A spermatogonia
B. Type B spermatogonia
C. primary spermatocyte
D. secondary spermatocyte
E. Early spermatids
F. Late spermatids
A. Type A spermatogonia
B. Type B spermatogonia
C. primary spermatocyte
Spermiation is the release of mature spermatids into the lumen of seminiferous tubules. At this point, what is true of the cells?
A. They are fully formed and functional
B. They are diploid with residual bodies intact
C. They are considered fully formed spermatazoa, that are not yet functional
D. None of the above
They are considered fully formed spermatazoa, that are not yet functional
The hydrolytic enzyme called acrosome is located:
A. Head of the spermatazoa
B. Middle piece of spermatazoa
C. Principle piece of spermatazoa
D. Tunica albuginae of the ovary
A. Head of the spermatazoa
