[IEMR65-66LAB]Microanatomy of Male Reproductive System Lab Review

Question 1

What type of cell migrate to the adluminal compartment of the seminiferous tubules?

Answer 1

primary spermatocyte

Question 1

What are the six stages of spermiogenesis?(7 points)

Answer 1

The Golgi apparatus elaborates a large vesicle which becomes the acrosomal vesicle, which accumulates carbohydrates and hydrolytic enzymes. Acrosomal vesicle becomes applied to one pole of the elongating nucleus to become the acrosomal head cap. Centrioles migrate to opposite side of the head cap and form a flagellum with the basic “nine and two” arrangement found in the cilia. Nine Fibrils nine coarse fibrils become arranged longitudinally around the core of the flagellum. Further rib-like fibrils become disposed circumferentially around the whole flagellum. Cytoplasmic migration: cytoplasm migrates to surround the first part of the flagellum. Migration of cytoplasm concentrates mitochondria in the flagella region. Flagellum elongation: as the flagellum elongates excess cytoplasm is phagocytozed by the enveloping Sertoli cell prior to release of the spermatozoa into the lumen of the seminiferous tubule. Helical mitochondria. The mitochondria become arranged in a helical manner around the fibrils, which surround the first part of the flagellum.

Question 1

The two pair corpora cavernosa are surrounded by a thick layer of connective tissue referred to as what?

Answer 1

tunica albuguinea

Question 2

What type of division do spermatids go through?

Answer 2

They don’t divide any further, they go through spermiogenesis

Question 3

The undifferentiated germ cell found in the basement compartment of the seminiferous tubules are referred to as what?

Answer 3

Type A Spermatogonia

Question 3

How can you differentiate a cross section of the epididymis and a cross section of the vas deferens?

Answer 3

The muscular layer of the vas deferens is much thicker

Question 4

What type of cell: identified by their nuclei which, characteristically can be irregular in shape and often with one deep invagination. The nucleus may be round, oval or triangular in shape. The nucleus is euchromatic and it usually has prominent nucleoli and dispersed chromatin

Answer 4

sertoli cells

Question 5

What are the three layers that make up the wall of the epididymis?

Answer 5

Three muscular layers, inner layer, middle circular layer and outer longitudinal layer

Question 7

What structure: The duct joins the ductus deferens on each side of the body to form the paired ejaculatory ducts, which empty into the prostatic urethra?

Answer 7

seminal vesicle

Question 7

How many types of glands make up the prostate?

Answer 7

three

Question 7

The corpus spongiosum is surrounded by a thin layer of connective tissue referred to as what?

Answer 7

tunica albuguinea

Question 8

How many layers exist in the wall of the epididymis?

Answer 8

three layers

Question 9

How long does spermatogenesis, including spermiogenesis, takes?

Answer 9

It takes about 7-10 weeks

Question 10

What cell in the spermatogenic series lie closest to the lumen of the seminiferous tubules?

Answer 10

spermatids

Question 11

What type of cell: these cell rapidly undergo meiotic division?

Answer 11

secondary spermatocyte

Question 12

What type of cell: The cells are large, rounded or polygonal, they have pale- staining vacuolated cytoplasm with lipid droplets which is lost during fixation and preparation of the histological specimen.

Answer 12

Leydig cells

Question 13

What type of eptihelium do you find in the lumen of the penile urethra?

Answer 13

peusdostratified columnar epithelium

Question 14

What type of cell in the male reproductive system contain Crystals of Reinke?

Answer 14

Leydig cells

Question 15

The Rete Tests drain into how many ducts? What is the name of these ducts?

Answer 15

15-20 convoluted ducts ; Ductus Deferenes

Question 16

The final maturation of spermatogenesis takes place in what location of the male reproductive system?

Answer 16

epididymis

Question 18

What cell in the spermatogenic series lie closest to the basement membrane of the seminiferous tubules?

Answer 18

spermatogonia

Question 19

The microscopic image of the seminal vesicle can be confused with another organ, what is that organ? How do you distinguish?

Answer 19

the gall bladder; the gall bladder has tall columnar absorptive epithelium while the seminal vesicle is lined by psuedostriafied columnar epithelium

Question 20

What type of cell go under mitosis to produce primary spermatocyte?

Answer 20

Type B Spermatogonium

Question 20

What type of cell: copious cytoplasm and large nuclei containing coarse clumps or thin threads of chromatin; spend a long time in prophase of the first meiotic division, so most of them will have a round nucleus with an intact nuclear membrane and some evidence of chromosome condensation.

Answer 20

primary spermatocyte

Question 21

What type of cell: These are non-spermatogenic cells which support and nourish the developing spermatogenic cells

Answer 21

sertoli cells

Question 22

What type of epithelium line the straight part of the Rete Testis?

Answer 22

Simple Cuboidal Epithelium

Question 24

What type of cell in the male reproductive system: dispersed chromatin, central nucleoli, and no nuclear vacuole; sparse poorly stained cytoplasm

Answer 24

Type B Spermatogonia

Question 25

What type of cell in the male reproductive system contain Charcot-Bottcher crystals?

Answer 25

Sertoli cells

Question 26

The mucus producing glands of Littre secrete into the lumen of what structure?

Answer 26

penile urethra

Question 27

What type of epithelium do you find near the external orifice of the penile urethra?

Answer 27

stratified squamous epithelium

Question 28

What type of glands in the prostate are usually the site of prostatic carcinomas?(2 points)

Answer 28

The mucosal and prostatic glands

Question 30

What type of cell: are characterized by a large round or oval nucleus with condensed chromatin; peripheral nucleoli and a nuclear vacuole may be prominent.

Answer 30

Type A Spermatogonia

Question 31

What type of cell: early forms have small round cells with round nuclei.

Answer 31

spermatids

Question 31

The sertoli cells near the intracellular adhesions divide the seminiferous tubules into what compartments?(2 points)

Answer 31

basal and adluminal compartments

Question 32

What type of cell: The cytoplasm contains a moderate number of mitochondria, lipid droplets and a small amount of rough endoplasmic reticulum. There is plentiful smooth endoplasmic reticulum, there is also present lamellar protein arrays known as Charcot-Bottcher crystals seen at higher magnification of EM

Answer 32

Sertoli cells

Question 35

What is the last step of spermiogenesis?

Answer 35

the loss of excess cytoplasm as a residual body

Question 36

The cavernous spaces are separated in trabaculae which contain small arteries. What is the name of those small arteries?

Answer 36

helicine arteries

Question 38

What is the relative size of the lumen of the gland that make up the prostatic gland compared with the size of the lumen of the seminal vesicle?

Answer 38

The lumen of the seminal vesicle is much larger than the lumen of the glands that make up the prostate

Question 39

What are the types of glands that make up the prostate?(3 points)

Answer 39

The prostatic gland, the mucosal gland and the submucosal gland

Question 40

What are the three cavernous bodies that make up the penis?

Answer 40

The two pair corpora cavernosum and the single corpus spongiosum

Question 41

Sertoli cells are associated with each other in what fashion?

Answer 41

They’re joined together by tight junctions referred to as junctional complexes

Question 42

Type A spermatogonia go through several cycles of mitosis to produce what type of cells?

Answer 42

Type B Spermatogonia