Histology

Question 1

what is the thickened posterior portion of the tunica albuginea called?

Answer 1

mediastinum testis

Question 2

what does the mediastinum testis do?

Answer 2

it divides the organ into 250 compartments or testicular lobules

Question 3

what is within the testicular lobules?

Answer 3

lots of semineferous tubules

Question 4

what are the interstitial cells of leydig

Answer 4

cells between semineferous tubules

Question 5

what do cells of leydig secrete?

Answer 5

testosterone

Question 6

what do cells of leydig have in them that is precursor to testosterone?

Answer 6

have cholesterol in them

Question 7

what can be on histo that is special in leydig cells?

Answer 7

Reinke crystals that are cytoplasmic inclusions

Question 8

what do seminefirous tubules feed into?

Answer 8

tubuli recti

Question 9

what do tubuli recti feed into?

Answer 9

rete testis

Question 10

what is within seminiferous tubules that is important for sperm?

Answer 10

speratogenic cells

Question 11

aside from spermatogenic cells in the seminefirous tubules, what is other cell?

Answer 11

sertoli cell

Question 12

what activates cells of leydig?

Answer 12

LH

Question 13

what activates sertoli cells?

Answer 13

FSH

Question 14

what do sertoli cells synthesize?

Answer 14

ABG…androgen binding protein

Question 15

what si the role of ABG?

Answer 15

to maintain right amount of testosterone in seminefirous tubules to make sperm

Question 16

aside from ABG, what do sertoli cells secrete?

Answer 16

inhibin

Question 17

what is the role of inhibin?

Answer 17

inhibits release of FSH from ant pit

Question 18

aside from ABG, inhibin, what else do sertoli cells secrete?

Answer 18

antimellurian hormone

Question 19

what is anti mellurian hormone?

Answer 19

helps determine body hair and shape

Question 20

what can sertoli cells phagocytose?

Answer 20

excess cytoplasm from maturing sperm

Question 21

how do sertoli cells connect with each other?

Answer 21

tight junctions

Question 22

what do sertoli cell tigh junctions form in the testis?

Answer 22

a testi blood barrier

Question 23

name the three phases of spermatogenesis

Answer 23

spermatocytogenesis
meiosis
spermiogenesis

Question 24

what is spermatocytogenesis ?

Answer 24

differentiation of spermatogonia into primary spermatocytes

Question 25

what is spermiogenesis?

Answer 25

transformation of spermatids into spermatozoa

Question 26

name the five cells in the sperm prdxn process

Answer 26

``` spermatogonia into primary spermatocytes into secondary spermatocytes into spermatids into spermatozoa ```

Question 27

what do you see more of, primary or secondary spermatocytes? why?

Answer 27

primary because they are in that phase longr

Question 28

what is DNA make up of spermatogonia?

Answer 28

regular diploid but go through mitosis to lead to prrimary spermatocytes

Question 29

what is DNA make up of primary spermatocytes?

Answer 29

4cDNA

Question 30

what is DNA change to make secondary spermatocytes?

Answer 30

meiosis 1

Question 31

what is DNA make up of secondary spermatocytes?

Answer 31

2cDNA

Question 32

what is DNA change to make spermatids?

Answer 32

meiosis II`

Question 33

what are the phases of change for spermatids?

Answer 33

golgi cap acrosomal maturation

Question 34

what is the epithelium of ductus efferentes?

Answer 34

ciliated columnar cells with unciliated cuboidal cells

Question 35

what is the covering of ductus efferentes?

Answer 35

loose connective tissue with thin layer of SM

Question 36

what is the fxn of the ductus efferentes?

Answer 36

resorb fluid from semen

Question 37

what is the epithelium of epididymis ?

Answer 37

pseudostrat columnar

Question 38

what is the covering of epididymis?

Answer 38

loose connective with think layer of SM

Question 39

what is the fxn of the epididymis ?

Answer 39

resorb fluid and secrete things that delay full dvlpmnt of sperm until in female

Question 40

what is the epithelium of ductus deferens?

Answer 40

pseudostarat columnar

Question 41

what is the covering of ductus deferens?

Answer 41

3 layers of smooth muscle

Question 42

what is the fxn of the ductus deferens?

Answer 42

conduct sperm

Question 43

what is the epithelium of the ejaculatory duct?

Answer 43

simple columnar

Question 44

what is the fxn of the seminal vesicles?

Answer 44

secrete fluid that has fructose etc to activate the sperm

Question 45

what is within the prostate that is important for ejaculation?

Answer 45

30-50 tubuloalveolar glands that empty into excretory ducts that drain into ejaculatoryduct

Question 46

what is corpora amylacea?

Answer 46

prostatic concentrations that become calcified

Question 47

are corpora amylacea bad?

Answer 47

no they increase with age and have no issues

Question 48

where are corpora amylacea found?

Answer 48

in prostate

Question 49

what is the fxn of the fluid released by the prostate?

Answer 49

to liquify the coagulated semen after it is deposited in the female

Question 50

name a few things in the prostate secretions

Answer 50

proteolytic enzymes citric acid acid phosphatase fibrinolysin