[IEMR65-66LAB]Microanatomy of Male Reproductive System Lab Review Flashcards
What type of cell migrate to the adluminal compartment of the seminiferous tubules?
primary spermatocyte
What are the six stages of spermiogenesis?(7 points)
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.
The two pair corpora cavernosa are surrounded by a thick layer of connective tissue referred to as what?
tunica albuguinea
What type of division do spermatids go through?
They don’t divide any further, they go through spermiogenesis
The undifferentiated germ cell found in the basement compartment of the seminiferous tubules are referred to as what?
Type A Spermatogonia
How can you differentiate a cross section of the epididymis and a cross section of the vas deferens?
The muscular layer of the vas deferens is much thicker
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
sertoli cells
What are the three layers that make up the wall of the epididymis?
Three muscular layers, inner layer, middle circular layer and outer longitudinal layer
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?
seminal vesicle
How many types of glands make up the prostate?
three
The corpus spongiosum is surrounded by a thin layer of connective tissue referred to as what?
tunica albuguinea
How many layers exist in the wall of the epididymis?
three layers
How long does spermatogenesis, including spermiogenesis, takes?
It takes about 7-10 weeks
What cell in the spermatogenic series lie closest to the lumen of the seminiferous tubules?
spermatids
What type of cell: these cell rapidly undergo meiotic division?
secondary spermatocyte
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.
Leydig cells
What type of eptihelium do you find in the lumen of the penile urethra?
peusdostratified columnar epithelium
What type of cell in the male reproductive system contain Crystals of Reinke?
Leydig cells
The Rete Tests drain into how many ducts? What is the name of these ducts?
15-20 convoluted ducts ; Ductus Deferenes
The final maturation of spermatogenesis takes place in what location of the male reproductive system?
epididymis
What cell in the spermatogenic series lie closest to the basement membrane of the seminiferous tubules?
spermatogonia
The microscopic image of the seminal vesicle can be confused with another organ, what is that organ? How do you distinguish?
the gall bladder; the gall bladder has tall columnar absorptive epithelium while the seminal vesicle is lined by psuedostriafied columnar epithelium
What type of cell go under mitosis to produce primary spermatocyte?
Type B Spermatogonium
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.
primary spermatocyte
What type of cell: These are non-spermatogenic cells which support and nourish the developing spermatogenic cells
sertoli cells
What type of epithelium line the straight part of the Rete Testis?
Simple Cuboidal Epithelium
What type of cell in the male reproductive system: dispersed chromatin, central nucleoli, and no nuclear vacuole; sparse poorly stained cytoplasm
Type B Spermatogonia
What type of cell in the male reproductive system contain Charcot-Bottcher crystals?
Sertoli cells
The mucus producing glands of Littre secrete into the lumen of what structure?
penile urethra
What type of epithelium do you find near the external orifice of the penile urethra?
stratified squamous epithelium
What type of glands in the prostate are usually the site of prostatic carcinomas?(2 points)
The mucosal and prostatic glands
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.
Type A Spermatogonia
What type of cell: early forms have small round cells with round nuclei.
spermatids
The sertoli cells near the intracellular adhesions divide the seminiferous tubules into what compartments?(2 points)
basal and adluminal compartments
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
Sertoli cells
What is the last step of spermiogenesis?
the loss of excess cytoplasm as a residual body
The cavernous spaces are separated in trabaculae which contain small arteries. What is the name of those small arteries?
helicine arteries
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?
The lumen of the seminal vesicle is much larger than the lumen of the glands that make up the prostate
What are the types of glands that make up the prostate?(3 points)
The prostatic gland, the mucosal gland and the submucosal gland
What are the three cavernous bodies that make up the penis?
The two pair corpora cavernosum and the single corpus spongiosum
Sertoli cells are associated with each other in what fashion?
They’re joined together by tight junctions referred to as junctional complexes
Type A spermatogonia go through several cycles of mitosis to produce what type of cells?
Type B Spermatogonia
