Male Reproductive Histology

Question 1

What structure(s) is responsible for sperm and androgen production?

Answer 1

Testes

Question 2

What structure(s) is responsible for sperm transport?

Answer 2

Epididymis

Vas Deferens

Ejactulatory duct

Urethra

Question 3

What structure(s) is responsible for semen production and a source of sperm nutrients?

Answer 3

Seminal Vesicle

Prostate Gland

Bulbourethral gland

Question 4

What structure(s) is a copulatory organ with erectile tissue?

Answer 4

Penis

Question 5

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

Answer 5

Mediastinum testes

Question 6

Identify the images A-E.

Indicate the structure that is derived from peritoneum.

Answer 6

A. Head of epididymis

B. Tunica Albuginea

C. Tunica Vaginalis- peritoneum derived

D. Rete Testis

E. Body of Epididymis

Question 7

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?

Answer 7

Seminiferous Tubules

(lined with specialized seminiferous epithelium)

Sertoli Cells and Spermatogenic cells

cells of Leydig

Question 8

Identify the indicated structures

Which ones have contractile capabilities

Answer 8

A: Sertoli Cells

B. Early spermatids

C: Late spermatids

D: Spermatagonia

E: Peritubular myoid cells

Question 9

Which of the following structures is the source of testosterone?

Answer 9

B

cells of leydig

Question 10

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

Answer 10

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

Question 11

Which of the following cells forms a blood testis barrier via fusion of their basolateral membranes, and phagocytosis residual bodies of spermatogenic cells?

Answer 11

A

sertoli cells

Question 12

What letter indicates the most likely location of the Blood Testis Barrier?

Answer 12

C

Question 13

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

Answer 13

Type A spermatogonia

basically a stem cell

NOTE: Type B are the ones that can enter meiotic prophase as primary spermatocytes

Question 14

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

Answer 14

Primary spermatocytes

• primary (early) spermatocytes must pass through the junctional complex made by ertoli cells to move from basal to adluminal compartment

Question 15

T/F: The blood testis barrier acts to isolate haploid germ cells (secondary spermatocytes, spermatids, and sperm) from system circulation

Answer 15

True

Question 16

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

Answer 16

Elongated (late) spermatids

NOTE: Round (early) spermatids are housed in niches of sertoli cells

Question 17

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

Answer 17

Spermiation

Question 18

What portion of the sperm contains mitochondria?

A. Head

B. Neck

C. Middle Piece

D. Principle piece

E. End piece

Answer 18

A. Head - contains flat elongated nucleus

B. Neck

C. Middle Piece

D. Principle piece- longest piece

E. End piece

Question 19

What is the sperm transport pathway starting from the straight tubules?

Answer 19

Straight Tubules

Rete Testis

Efferent ductules

Epidiymis

Ductus Deferens

Ejaculatory duct

S REEDE

Question 20

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

Answer 20

C. After efferent ductules

Question 21

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

Answer 21

Tail

Question 22

What structure is depicted?

A. Efferent ductules

B. Epididymis

C. Rete Testis

D. Ductus Deferens

Answer 22

Epididymis

• pseudostratified epithlium with long stereocilia

Question 23

What structure is depicted?

A. Rete Testis

B. Epididymis

C. Ductus Deferens

D. Ejaculatory Duct

Answer 23

C. Ductus Deferens

• external layer consists of loos CT and adipocytes

Question 24

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

Answer 24

Ampulla

NOTE: Distal end receives the ducts of the seminal vesicle which forms the ejaculatory duct

Question 25

Look at this

Answer 25

Cool

Question 26

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

Answer 26

Prostate gland and seminal vesicles

Question 27

Name the 3 accessory glands currently depicted?

Answer 27

Question 28

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?

Answer 28

Transition zone Central zone Peripheral zone

Question 29

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

Answer 29

Prostatic part

Question 30

What is the name of the hallmark feature of the prostate, that is rich in glycoproteins and Calcium deposits?

Answer 30

Concretion (Corpora Amylacea)

Question 31

What accessory gland produces a Zn-rich alkaline fluid? A. Seminal Vesicles B. Prostate Gland C. Bulbourethral gland D. Urethral Gland

Answer 31

Prostate Gland seminal vesicles- fructose and prostaglandin rich bulbourethral- mucus rich

Question 32

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?

Answer 32

Bulbourethral gland Simple columnar

Question 33

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

Answer 33

ventral corpus spongiosum

Question 34

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

Answer 34

Right and Left corpora cavernosa

Question 35

Look at this picture

Answer 35

Cool

Question 36

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

Answer 36

A. Type A spermatogonia B. Type B spermatogonia C. primary spermatocyte

Question 37

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

Answer 37

They are considered fully formed spermatazoa, that are not yet functional

Question 38

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

Answer 38

A. Head of the spermatazoa