T3 Reproductive System

Question 1

What gene cause the development of sertoli cells?

Answer 1

SRY

Question 2

Sertoli cell secrete what to generate “maleness.”

Answer 2

Mullerian inhibiting factor

Question 3

What is the effect of mullerian inhibiting factor?

Answer 3

it causes the regression of the mullerian ducts.

Question 4

What is produced by the interstitial cells of the rete cords that causes the retention of the mesonephric ducts?

Answer 4

testosterone

Question 5

What structures are present in a female?

Answer 5

mullerian ducts remain and the mesonephric ducts will eventually regress

Question 6

What germ layer is the origin for the entire reproductive system?

Answer 6

mesodermal

Question 7

Within the indifferent gonad, there is an outer cortex and an inner medulla. within the medulla, what the the structure that has the potential to give rise to the seminiferous tubules, which contain sertoli cells and interstitial cells in the event of a genetic male?

Answer 7

sex cords

Question 8

What structure in the genetic male anatomoses with the sex cords?

Answer 8

rete cords.

Question 9

In the genetic female, the medulla regresses and the cortex forms what structure?

Answer 9

ovary

Question 10

What is the connective tissue layer that separates the cortex and the medulla?

Answer 10

tunica albuginea

Question 11

the medulla of indifferent gonad will form what in the male?

Answer 11

testis

Question 12

The sex cords form seminiferous tubules with sertoli cell and interstitial cells. these cords are solid until when??

Answer 12

Puberty, when spermatogenesis begins

Question 13

What forms the efferent ductules in the male?

Answer 13

mesonephric tubules in the vicinity of the gonads

Question 14

What three things does each mesonephric duct form?

Answer 14

epididymus, seminal vesicle, and vas deferents

Question 15

What forms the ovary in the female?

Answer 15

the cortex of the indifferent gonad

Question 16

What structures degenerate in the female?

Answer 16

rete cords, sex cords, mesonephric tubules and mesonephric ducts.

Question 17

What do the mullerian ducts give rise to?

Answer 17

oviducts, uterus, and a portion of the vagina

Question 18

What is the name for a single uterus formed by the fusion of a uterus with two prominent expansions?

Answer 18

simplex uterus

Question 19

The proximal ends of the mullerian ducts expand to become what structure?

Answer 19

the ostia of the oviducts

Question 20

Where are eggs released from? Where do they enter? What is their path?

Answer 20

Graafian follicles; enter the ostia; journey down to the uterus

Question 21

In female, the ovaries retain their position in the abdomen. In males, this does not occur, why?

Answer 21

abdominal temperatures are too high and interfere with sperm formation.

Question 22

What structures does the genital tubercle give rise to?

Answer 22

male: glans of penis
female: clitoris

Question 23

What structures does the genital folds give rise to?

Answer 23

male: shaft of penis
female: labia minora

Question 24

What structures does the genital swellings give rise to?

Answer 24

male: scrotum
female: labia majora

Question 25

While the gonad is developing into testis or ovary, the primordial germ cells that appeared very early in development will migrate where?

Answer 25

to the developing gonad

Question 26

What occurs if the primordial germ cells fail to reach the gonads?

Answer 26

the organism will develop normally anatomically, but will be sterile because of the absence of germ cells in its gonads