Male Repro Histo

Question 1

What are the 3 phases of spermatogenesis?

Answer 1

1.Spermatogonial phase 2.Spermatocyte phase 3.Spermatid phase

Question 2

In which phase does the spermatocyte undergo meiosis to form the spermatid?

Answer 2

Spermaocyte phase

Question 3

Which two phases are included in spermatocytogenesis?

Answer 3

Spermatogonial and spermatocyte phases

Question 4

What is the serous membrane derived from the peritoneum obtained during the descent of the testes?

Answer 4

Tunica vaginalis

Question 5

What is the dense CT capsule surrounding the testis?

Answer 5

Tunica albuginea

Question 6

Where do blood vessels, lymphatic vessels/ducts enter and exit the testis?

Answer 6

Mediastinum testis (thickened posterior portion of tunica albuginea)

Question 7

What connects the rete testis to the head of the epididymis?

Answer 7

Efferent tubules

Question 8

What are the 2 cells found in seminiferous tubules?

Answer 8

Sertoli cells and spermatogenic cells

Question 9

What are the roles of the Sertoli cells?

Answer 9

1.Create a blood-testis barrier, a physical barrier preventing autoimmune attack on the spermatogenic cells 2.Support, protect, and provide nutrition to developing spermatogenic cells 3.Exocrine/Endocrine function 4.Phagocytosis of excess cytoplasm

Question 10

Which cells are the most immature of the spermatogenic cells and they lie on the basal lamina?

Answer 10

Spermatogonia

Question 11

Which type of spermatogonia are the stem cells?

Answer 11

Type A dark (Ad) spermatogonia; these can give rise to more type Ad or type A pale (Ap)

Question 12

Which are the first spermatogenic cells that are committed to go thru the differentiation process?

Answer 12

Type A pale (Ap) spermatogonia

Question 13

Type B spermatogonia develop from Type Ap and then develop into which spermatogenic cells?

Answer 13

Primary spermatocyte

Question 14

What are the largest of the spermatogenic cells?

Answer 14

Primary spermatocyte

Question 15

Which spermatogenic cells are created after meiosis I and how many chromatids are present? Is it diploid or haploid?

Answer 15

Secondary spermatocyte; 2 chromatids; haploid

Question 16

In meiosis II, ____ lead to _____?

Answer 16

Secondary spermatocyte; Spermatid

Question 17

Describe the difference in appearance of early and late spermatid.

Answer 17

Early = rounded with highly condensed chromatin; late = apparent head with acrosomal cap and flagellum

Question 18

Type Ap spermatogonia do not undergo ____, so that they are all still connected.

Answer 18

Complete cytokinesis

Question 19

The spermatid phase is also known as the maturation phase or _____?

Answer 19

Spermiogenesis

Question 20

What are peritubular contractile cells that surround the seminiferous tubules? What is their function?

Answer 20

Myoid cells; contract to help sperm move out of the tubules

Question 21

What 2 things make up the intratesticular ducts?

Answer 21

Straight tubules and rete testis

Question 22

Which tubules are lines with only Sertoli cells?

Answer 22

Straight tubules

Question 23

What kind of epithelium line the rete testis?

Answer 23

Cuboidal epithelium or low columnar epithelium

Question 24

The efferent ductules are lined with what?

Answer 24

Pseudostratified columnar epithelium with alternating groups of nonciliated cuboidal cells (with microvilli) with groups of taller ciliated cells

Question 25

Which of the cells of the efferent ductules absorb all of the fluids secreted by the seminiferous tubules?

Answer 25

Nonciliated cells with microvilli

Question 26

Where does the storage and completion of sperm occur? What kind of lining epithelium is here?

Answer 26

Ductus epididymis; pseudostratified columnar epithelium WITH stereocillia

Question 27

What lines the ductus deferens?

Answer 27

Pseudostratified columnar epithelium with SPARSE stereocillia

Question 28

How many layers of smooth muscle are contained within the muscularis externa of ductus deferens?

Answer 28

3

Question 29

What is the dilated area of the ductus deferens where the epithelium is thicker and more folded?

Answer 29

Ampulla

Question 30

Name the lining epithelium of the 3 portions of the urethra.

Answer 30

Prostatic = transitional epithelium, Membranous = stratified columnar or pseudostratified columnar, Spongy = pseudostratified columnar

Question 31

Which male accessory gland produces 60% of the seminal fluid?

Answer 31

Seminal vesicles

Question 32

The secretions from the prostate gland play what role?

Answer 32

Activation of the sperm

Question 33

What does the bulbourethral gland produce? Where is the substance secreted?

Answer 33

A thick, clear alkaline mucous that washes out any residual urine and buffer against acidity of female tract; into the penile urethra ahead of the sperm

Question 34

What is useful in the histological identification of the prostate gland?

Answer 34

The presence of corpora amylacea/prostatic concretions (calcified concretion in lumen)

Question 35

What kind of glands are the bulbourethral glands?

Answer 35

Compound tubuloalveolar glands

Question 36

What is unique about the histology of the seminal vesicles?

Answer 36

The folding of the mucosa gives the appearance of multiple lumen

Question 37

What surrounds the spongy urethra?

Answer 37

Corpus spongiosum

Question 38

What are the pair of cylindrical structures dorsal to the penile urethra?

Answer 38

Corpus cavernosum