Embryology Genital System

Question 1

Is the gonadal ridge medial or lateral to the nephrogenic (urinary) cord?

Answer 1

medial

Question 2

During what embryonic weeks is the sexual development of the person “indifferent”?

Answer 2

weeks 1-6

Question 3

What are the names of the individual male and female genital ducts?

Answer 3

male: mesonephric
female: paramesonephric

Question 4

During week 5, what thickens to form the gonadal ridge in the embryo?

Answer 4

intermediate mesoderm

Question 5

mesothelial cells of the gonadal ridge are also known as…

Answer 5

gonadal cord cells

Question 6

Leydig cells develop from what and produce what?

Answer 6

they develop from mesenchyme of the gonadal ridge and produce testosterone

Question 7

Sertoli cells develop from what and form what?

Answer 7

they develop from gonadal cord cells and form seminiferous tubules and rete testes

Question 8

Answer 8

Question 9

Answer 9

Question 10

What chemical induces mesonephric ducts to form male genital ducts?

Answer 10

testosterone

Question 11

What cells produce testosterone in the testes?

Answer 11

leydig cells

Question 12

Testosterone produced by leydig cells causes mesonephric ducts and mesonephric tubules to “puncture” region of gonadal ridge where testicles are developing to form what three things?

Answer 12

ductus deferens, epididymis, & efferent ductules

Question 13

Name the three items on the far left of the image

Answer 13

Question 14

name the following three structures

Answer 14

Question 15

The caudal ends of the mesonephric ducts develop what two things?

Answer 15

seminal vesicles and ejaculatory ducts

Question 16

Name the 5 items on the right side of the image

Answer 16

Question 17

Sertoli cells are responsible for the degeneration of what?

Answer 17

the müllerian duct

Question 18

The seminal vesicle and the ejaculatory duct form the caudal end of the what?

Answer 18

mesonephric duct

Question 19

The prostate and bulbourethral (Cowper’s) glands are endodermal outgrowths from the what?

Answer 19

urogenital sinus

Question 20

During what week do the testes descend?

Answer 20

week 26

Question 21

What is the name of the ligament that pulls the testis down into the scrotal sac?

Answer 21

gubernaculum

Question 22

Answer 22

Question 23

What is a testicular hydrocoele?

Answer 23

development of fluid-filled cysts in the testes/spermatic cord

Question 24

What is cryptorchidism?

Answer 24

failure of the testes to descend

Question 25

In females, what are the “caretakers” of PGCs (primordial germ cells)?

Answer 25

follicular cells

Question 26

_____ surround the primordial germ cells (PGCs) and form ovarian follicles

Answer 26

follicular cells

Question 27

Does the müllerian duct degrade in the males or the females?

Answer 27

males

Question 28

A primordial follicle is made up of two things: What and what?

Answer 28

primary oocyte and follicle cell capsule

Question 29

With females, the lack of SRY leads to the lack of TDF which results in the degeneration of what?

Answer 29

mesonephric duct

Question 30

What are the two mesonephric duct remnants in the female?

Answer 30

1) epoöphoron
2) paraöphoron

Question 31

Answer 31

Question 32

accessory glands of the female genital system

Answer 32

Question 33

Answer 33

Question 34

male external genitalia

Answer 34