reproductive development

Question 1

at what week does the gonads differentiate

Answer 1

7th week

Question 2

3 sources that gonads are derived from

Answer 2

1. mesothelium (posterior wall)
2. underlying mesenchyme
3. primordial germ cells

Question 3

appear among the endoderm cells of the yolk sac close to the allntois

Answer 3

primordial germ cells

Question 4

the __ chromosome codes for the proliferation of the primary sex cords

Answer 4

Y

Question 5

near the hilus, the cords break up into tiny cell strands, forming the

Answer 5

rete testis

Question 6

the testis cords are now composed of primitive germ cells and

Answer 6

sertoli cells

Question 7

what cells produce testosterone

Answer 7

leydig

Question 8

testis can secrete

Answer 8

testosterone and androstenedione

Question 9

efferent ductules are derived from _______

Answer 9

mesonephric tubules

Question 10

rete testis and ductus epididymis are derivatives of

Answer 10

mesonephric ducts

Question 11

ovaries have what chromosomes

Answer 11

XX

Question 12

ovaries ____ unlike men

Answer 12

surface epithelium of the female gonad proliferate

Question 13

at the 7th week, ovaries give ride to the

Answer 13

cortical cords

Question 14

4th month, cortical cords split into isolated cells clusters that surround

Answer 14

primitive germ cells

Question 15

germ cells then develop into

Answer 15

oogonia

Question 16

surrounding epithelial cells develop into

Answer 16

follicular cells

Question 17

a pair of paramesonephric ducts are found where in a female

Answer 17

nephrogenic cord

Question 18

female: absence of androgens, ____ cause the paramesonephric ducts to develop into uterine tubes and fuse at midline to form the uterus

Answer 18

estrogens

Question 19

external male genital development is stimulated by gonadal androgen:

Answer 19

dihydrotestosterone

Question 20

the genital fold develops into the

Answer 20

urethral plate

Question 21

the urethral plate elongates and becomes the urethral groove finally becoming the

Answer 21

urethra

Question 22

without dihydrotestosterone, the genital swellings become the ___ and urethral folds become

Answer 22

labia majora

labia minora

Question 23

male: derived from urogenital sinus

Answer 23

urinary bladder
urethra
prostate
cowpers gland
prostatic utricle

Question 24

female: derived from urogenital sinus

Answer 24

urinary bladder
urethra
lower vagina
vestibule
greater vestibular/urethral glands

Question 25

male: from mesonephric ducts

Answer 25

``` efferent ductules duct of epididymis ductus deferens ejact duct seminal vesicles ureter, renal pelvis, calices, collecting tubules appendix of testis ```

Question 26

female: from paramesonephric duct

Answer 26

uterine tubes uterus upper vagina

Question 27

formation of hardened tissue in the penis that causes pain (curve)

Answer 27

peyronies disease

Question 28

carries muscular and fascial layers with it as if forms the inguinal canal

Answer 28

processus vaginalis

Question 29

fibrous cord that connects the undescended testes to anterior abdominal wall

Answer 29

gubernaculum

Question 30

testes travel posterior to the ____ and enter ____

Answer 30

processus vaginalis scrotum

Question 31

processus vaginalis becomes

Answer 31

tunica vaginalis

Question 32

gubernaculum becomes

Answer 32

scrotal ligament

Question 33

derived from tranversalis fascia

Answer 33

internal spermatic fascia

Question 34

derived from internal oblique aponeurosis. innervated by genital branch of genito femoral

Answer 34

cremasteric muscle

Question 35

derived from the external oblique aponeurosis

Answer 35

external spermatic fasica

Question 36

_____ does not contribute to spermatic cord layers

Answer 36

transversus abdominis m

Question 37

adult remnant of the gubernaculum that connects the ovaries to the uterus

Answer 37

ovarian ligament

Question 38

adult remnant of the gubernaculum that connects the uterus to the labium majus

Answer 38

round ligament

Question 39

if there is a incomplete closure of the processus vaginalis, a persistent canal may remain called

Answer 39

canal of NUCK