Lecture 10

Question 1

Myotome produce

Answer 1

myoblasts

Question 2

Myoblasts stop dividing, ___________

Answer 2

fuse and elongate to form syncytial myotubes

Question 3

Syncytial myotubes become

Answer 3

skeletal muscle

Question 4

When embryos form they have both _______ and _________ ducts

Answer 4

Wolffian and Mullerian ducts

Question 5

In males Mullerian duct _________ due to __________.

Answer 5

degenerates due to antiMullerian duct factors from serotoli cells

Question 6

In males, Wolffian ducts becomes

Answer 6

epidydimis, vas deferens

Question 7

In females, Wolffian duct _______ due to ____________

Answer 7

degenerates due to a lack of testosterone.

Question 8

In females, Mullerian ducts become

Answer 8

oviduct, uterus, cervix, upper vagina

Question 9

In male vertebrates, PGCs are incorporated into

Answer 9

sex chords

Question 10

At maturity, the sex chords __________

Answer 10

hollow to form the seminiferous tubules

Question 11

during fetal development of males, mesenchyme cells of testes differentiate into _____ cells which produce _________

Answer 11

leydig cells which produce testosterone

Question 12

Gonad rudiments form and are sexually

Answer 12

indifferent at first, 4th to 7th week