The crown-to-rump length of an 8-week human embryo is a. 3 mm. b. 10 mm. c. 22 mm. d. 90 mm. During human embryonic development, organogenesis occurs a. during the first trimester. b. during the...

The crown-to-rump length of an 8-week human embryo is

a. 3 mm.

b. 10 mm.

c. 22 mm.

d. 90 mm.

During human embryonic development, organogenesis occurs

a. during the first trimester.

b. during the second trimester.

c. during the third trimester.

d. just before birth.