Reproductive System

Question 1

where does the genital ridge form?

Answer 1

mesonephric tissue

Question 2

primordial germ cells migrate where?

Answer 2

through the primitive streak into the wall of the yolk sac.

Question 3

how long does the primordial germ cells migrate for?

Answer 3

until week 4

Question 4

where do the primordial germ cells migrate back?

Answer 4

into the embryo and associate with dorsal mesentery

Question 5

when does populate genital ridge develop?

Answer 5

week 6

Question 6

what happens if the genital ridge doesn’t develop?

Answer 6

if fails gonads will not develop

Question 7

what do germ cells associate with?

Answer 7

proliferating body epithelium

Question 8

are the primitive sex cords temporary or permanent in females?

Answer 8

temporary

Question 9

are the primitive sex cords temporary or permanent in males?

Answer 9

permanent

Question 10

what is male development driven by?

Answer 10

driven by SRY on Y chromosomes

Question 11

the medullary cords develop into what?

Answer 11

develop into fine tubules at helium= retes testis

Question 12

what happens after the medullary cord develops during male development?

Answer 12

cords become more defined and mesonephric tubules become epigenital tubules then ductules

Question 13

how does the mesonephric duct develop during male development?

Answer 13

develops a muscular coat and becomes vas deferens and looses connection to the blood

Question 14

what is the gubernaculum is attached to what in relation to female reproduction?

Answer 14

the paramesonephric ducts

Question 15

where does the the gubernaculum pass through?

Answer 15

passes through inguinal canal and down to wall of scrotum. Pulling testis with it.

Question 16

as paramesonephric ducts fuse they create what?

Answer 16

they create the broad ligament of the uterus

Question 17

what is the vaginal process?

Answer 17

small extension of peritoneum pass through

Question 18

vaginal process becomes what?

Answer 18

tunica vaginalis-> cushion of peritoneum

Question 19

in female reproduction the paramesonephric ducts fuse and form what?

Answer 19

form the uterine canal at caudal end

Question 20

what is the gubernaculum is attached to what in relation to male reproduction?

Answer 20

the testis

Question 21

cords remain where as they develop?

Answer 21

near cortex of ovary

Question 22

cortical cords 2nd generation of cords give what?

Answer 22

follicles of ovary

Question 23

how is the primordial follicle formed?

Answer 23

formed from the break down of cords

Question 24

as the gubernaculum fuses in the female reproductive system what do they create?

Answer 24

they create broad ligament of the uterus

Question 25

where are the ovaries pulled into?

Answer 25

peritoneal fold

Question 26

urogenital sinus comes from where?

Answer 26

cloaca

Question 27

when the cells proliferate in the female reproductive system they form what?

Answer 27

sinovaginal bulbs

Question 28

what gives the vagina?

Answer 28

bulbs are initially solid tissue but canalise and give the vagina

Question 29

what is the fornix?

Answer 29

upper 1/3 of vagina form paramesonephric

Question 30

what are abnormalities associated with the development of the female reproductive system?

Answer 30

uterus didelphys, uterus arcuatus, uterus bikornis, atresia of cervix (or vagina)

Question 31

when can you tell the sex of the foetus?

Answer 31

until 10-12 weeks

Question 32

what forms on the 3rd week?

Answer 32

cloacal folds form and fuse cranially to give genital tubercle

Question 33

what forms on the 6th week?

Answer 33

cloacal membrane divided into urogenital and anal membranes cloacal folds divide into urethral and anal folds