Wk3 Male Repor Histo

Question 1

Forms the lobules and mediastinum of testes:

Answer 1

Tunica albuginea

Question 2

Sac surrounding anterior and lateral parts of testes:

Answer 2

Tunica vaginalis

Question 3

Lobules of testes contain:

Answer 3

seminiferous tubules

Question 4

Location of spermatogenesis:

Answer 4

seminiferous tubules

Question 5

Four cell stages of spermatogenesis in seminiferous tubules:

Answer 5

1. Spermatogonium (outermost)
2. Primary spermatocytes
3. secondary spermatocytes (rarely visualized)
4. early spermatids

**slide 16

Question 6

Ploidy of spermatogonia:

Answer 6

diploid

Question 7

“Reserve” stem cells for spermatogenesis:

Answer 7

Dark type A spermatogonia

Question 8

“renewing” stem cells for spermatogenesis:

Answer 8

Pale type A spermatogonia

Question 9

differentiating progenitors of spermatogenesis:

Answer 9

Type B spermatogonia

Question 10

Largest germ cell

enter Meiosis I

distinct nuclear profiles

Answer 10

Primary spermatocytes

Question 11

germ cells that are rarely seen

rapidly enter meiosis II

Answer 11

Secondary spermatocytes

Question 12

Review slides…

Answer 12

25-27

Question 13

Pillar like cells that extend from the basement membrane to the lumen of the seminiferous tubule:

Answer 13

Sertoli cells

Question 14

Blood-testes barrier formed by:

Answer 14

Sertoli cells

Question 15

Cells with FSH receptors:***

Answer 15

Sertoli cells

Question 16

Cells that produce androgen binding protein

Answer 16

Sertoli cells

Question 17

Testosterone producing cells:

Answer 17

Leydig

**extensive smooth ER

Question 18

LH act on _______ cells.

Answer 18

Leydig

Question 19

Cells that produce inhibin:

Answer 19

Sertoli

Question 20

Cryptorchidism effect on androgen production:

Why?

Answer 20

None

Leydig’s are not temperature sensitive

Question 21

What does inhibin do?

Answer 21

Sertoli cells –> negative feedback on pituitary –> inhibits FSH release

**inhibits FSH release

Question 22

What is the negative feedback mechanism on both the hypothalamus and the pituitary:

Answer 22

testosterone from Leydigs

Question 23

Path for sperm after leaving the seminiferous tubule:

Answer 23

Straight tubule –>

Rete testis –>

Efferent ductules –>

Ductus epidiymis –>

Vas deferens –>

Ampulla of vas deferens –>

Ejaculatory duct –>

Urethra

**slide 68

Question 24

Epithilium is characterized by Tall/Short cells:

Answer 24

Efferent ductules

Question 25

SMOOTH UNIFORM pseudostratified epithelium

circularly arranged smooth muscles

Answer 25

Epididymis

Question 26

Three SM layers

lamina propria

Answer 26

Vas deferens

Question 27

contributes FRUCTOSE to semen:

Answer 27

seminal vesicles

Question 28

LOTS of stroma:

Answer 28

Prostate

Question 29

Concretions

Answer 29

Prostate

Question 30

Secrete clear viscous lubricating material

lots of clear looking cells

Answer 30

Bulbourethral glands

Question 31

Non-distensible sheath that causes erection when blood filled:

Answer 31

tunica albuginia

Question 32

Two “lobes” of the penis surrounded by tunica albuginia:

Answer 32

Corpus cavernosum

Question 33

Penis lobe containing urethra:

Answer 33

Corpus spongiosum

Question 34

Neural control of initiating erection:

Answer 34

PARAsympathetic

artierial SM relax

veins become compressed

Question 35

Neural control of ejaculation:

Answer 35

Sympathetic

Pudendal nerve S1-S2

Question 36

Sympathetic stimulation causing arteries to regain tone:

Answer 36

Detumescence

–> flaccid

Question 37

Muscle for temp regulation of testes:

Answer 37

dartos