Male/Female Embryo

Question 1

Mesonephric duct degenerates; Paramesonephric duct develops

Answer 1

Female

Question 2

Produces testis-determining factor

Answer 2

SRY gene on Y chromosome

Question 3

Secrete Mullerian inhibitory factor that suppresses the development of the paramesonephric ducts

Answer 3

Sertoli Cells

Question 4

Secrete androgens that stimulate the development of the mesonephric ducts

Answer 4

Leydig cells

Question 5

Develops into fallopian tubes, uterus, and upper part of vagina

Answer 5

Paramesonephric (Mullerian) Duct

Question 6

Lower vagina

Answer 6

Urogenital sinus

Question 7

Develops into seminal vesicles, epididymis, ejactulatory duct, and ductus deferens

Answer 7

Mesonephric (Wolffian) Duct

Question 8

Results from incomplete fusion of the paramesonephric ducts

Answer 8

Bicornuate uterus

Question 9

SRY gene without sertoli cells or lack MIF

Answer 9

both male and female internal genitalia and male external genitalia

Question 10

5alpha reductase deficiency

Answer 10

inability to convert testosterone into DHT; male internal genitalia, ambiguous external genitalia until puberty (testosterone increases causing masculinization)

Question 11

Genital Tubercle with DHT

Answer 11

Glans penis; Corpus cavernosum and spongiosum

Question 12

Genital Tubercle with Estrogen

Answer 12

Glans clitoris; vestibular bulbs

Question 13

Urogenital sinus with DHT

Answer 13

Bulbourethral (Cowper) Glands and Prostate

Question 14

Urogenital sinus with Estrogen

Answer 14

Greater vestibular glands (Bartholin); Urethral and paraurethral glands of Skene

Question 15

urogenital folds with DHT

Answer 15

Ventral shaft of penis (penile urethra)

Question 16

Urogenital folds with Estrogen

Answer 16

Labia Minora

Question 17

Labioscrotal swelling with DHT

Answer 17

Scrotum

Question 18

Labioscrotal swelling with Estrogen

Answer 18

Labia Majora

Question 19

Abnormal opening of penile urethra on inferior (ventral) side of penis due to failure of urethral folds to close

Answer 19

Hypospadias

Question 20

Abnormal opening of penile urethra on superior (dorsal) side of penis due to fault positioning of genital tubercle

Answer 20

Epispadias

Question 21

Ovarian ligament + round ligament of uterus

Answer 21

Gubernaculum (band of fibrous tissue)

Question 22

Anchors testes within scrotum

Answer 22

Gubernaculum (band of fibrous tissue)

Question 23

Forms tunica vaginalis

Answer 23

Processes vaginalis (evagination of peritoneum) - obliterated in women

Question 24

Adenosis

Answer 24

focal persistence of columnar epithelium in upper vagina due to increased incidence of women exposed to DES in utero

Question 25

DES

Answer 25

prevents columnar to squamous development of vagina if fetus is exposed to it in utero