Histology-Male Reproductive System

Question 1

Identify the structures indicated below:

Answer 1

1) Skin w/dartos 2) Cremaster (skeletal muscle) 3) Epididymus & efferent ductules 4) Vas deferens 5) Seminiferous tubules

Question 2

Identify the structures indicated below:

Answer 2

1) Cremaster 2) Skin 3) Sebaceous gland 4) Hair follicle 5) Processus vaginalis 6) Epididymus

Question 3

Identify the structures indicated below:

Answer 3

1) Cremaster 2) Processus vaginalis 3) Tunica albuginea 4) Seminiferous tubules

Question 4

Identify the structures indicated below:

Answer 4

1) Sperm 2) Spermatogonia (dark stem cell at base of seminiferous tubule) 3) Lymphatic vessel 4) Spermatocyte 5) Spermatid 6) Blood vessels 7) Leydig cells 8) Spermatogonia (pale cell) 9) Sertoli cell

Question 5

Identify the structures indicated in the image below:

Answer 5

1) Tunica albuginea leading into mediastinum testis 2) Mediastinum testis full of rete testis

Question 6

Identify the structures indicated below:

Answer 6

1) Rete testis 2) Blood vessels 3) Seminiferous tubule 4) Seminiferous tubule transitioning into a straight testis

Question 7

Identify the type of cells in the structures indicated below:

Answer 7

1) Simple cuboidal epithelium is found in the rete testis 2) Simple squamous epithelium is found in blood vessels

Question 8

Identify the structures indicated below:

Answer 8

1) Blood vessels 2) Straight testis 3) Seminiferous tubule 4) Interstitial cells 5) Rete testis

Question 9

Identify the structures indicated below:

Answer 9

1) Ductus epididymus 2) Ductuli efferentes

Question 10

Identify the structures indicated below:

Answer 10

1) Maturing spermatozoa in the ductus epididymus 2) Stereocilia on pseudo stratified columnar epithelium 3) Basal cells 4) Smooth muscle

Question 11

What structures are indicated in the image below?

Answer 11

This is the spermatic cord 1) Pampiniform plexus of veins 2) Vas deferens 3) Cremaster fibers 4) Testicular artery

Question 12

How many layers of muscle are there in the vas deferens?

Answer 12

3: longitudinal, circular, longitudinal

Question 13

Where would you expect to find the smooth muscle in the structure shown below:

Answer 13

In the seminal vesicles, smooth muscle layers encircle the continuous lumen and is separate from the connective tissue

Question 14

What structures are indicated in the image below:

Answer 14

1) Utricle 2) Ejaculatory ducts 3) Seminal colliculus 4) Prostatic urethra w/prostatic sinuses.

Question 15

What organ is this from?

Answer 15

Prostate: note the secretory elements mixed with a fibromuscular stroma.

Question 16

What structure is indicated below?

Answer 16

Prostatic concretions

Question 17

What structures are indicated in the image below:

Answer 17

1) Corpus spongiosum 2) Urethra 3) Corpora cavernosa surrounded by tunica albuginea

Question 18

What structure surrounds the penile urethra?

Answer 18

Erectile tissue of the corpus spongiosum

Question 19

How can you tell the difference between the corpus cavernous and the rete testis?

Answer 19

Corpus cavernosum has blood vessels + endothelium + smooth muscle. The rete testis have basophilic simple cuboidal epithelium with blood vessels intermixed.

Question 20

Cells that make up the tunica vaginalis

Answer 20

Mesothelium (simple squamous)

Question 21

Working from the outside of a seminiferous tubule in, what cell types do you find as you get closer to the lumen?

Answer 21

Myoid cells (forms tubule sheath) -> Spermatogonia (small cells flattened against tubule wall) -> Primary spermatocytes (large cells in meiosis) -> Secondary spermatocytes (rarely found) -> Spermatids (round dense nuclei buried in Sertoli cells) -> Spermatozoa (free of Sertoli cells)

Question 22

Cells that make up the epididymis

Answer 22

Pseudostratified colunar epithelium with long branching microvilli (stereo cilia)

Question 23

Stereocilia vs. cilia

Answer 23

Stereocilia are nonmotile

Question 24

What forms the walls of the lobules of the seminiferous tubules

Answer 24

Septulae testis

Question 25

What forms the walls of the efferent ductules?

Answer 25

Columnar epithelium with motile cilia.

Question 26

What sections of the male genital tract has stereocilia?

Answer 26

Epididymus, vas deferens,

Question 27

How do you know you are in the seminal vesicles?

Answer 27

The mucosa is extensively folded and has abundant smooth muscle. Blood vessels and small sympathetic nerves reside in the connective tissue.

Question 28

What do secretions of the seminal vesicles contain?

Answer 28

Fructose

Question 29

Epithelium of the ejaculatory ducts

Answer 29

Simple to stratified columnar epithelium

Question 30

What type of epithelium is found in the urethra

Answer 30

Transitional -> simple squamous as you approach the pee hole.

Question 31

How does the appearance of the Leydig cells relate to their function?

Answer 31

They synthesize steroids and thus have abundant mitochondria and SER