Embryology

Question 1

which layer of the embryo does the urogenital system arise from?

Answer 1

intermediate mesoderm

Question 2

what is the common cavity all excretory ducts enter?

Answer 2

cloaca in week 4

Question 3

when is there distinction of chromosomal sex?

Answer 3

week 7

Question 4

what triggers male development?

Answer 4

presence of the SRY (sex-determining region of Y)

Question 5

what happens if there is mutations to AMH or receptor genes?

Answer 5

causes the paramesonephric duct not to regress

presents with uterus, vagina, fallopian tubes with testes in ovarian location and male external genitalia

Question 6

what is cryptochorchidism?

Answer 6

failure of descent of the testes

Question 7

what is hypospadias?

Answer 7

external urethral opening lies along ventral aspect of the penis

Question 8

female development

Answer 8

absence of SRY causes paramesonephric duct not to regress

Question 9

what does female organs come from?

Answer 9

Mullerian duct