General overview of Trimesters

Question 1

Embryonic Period (When, What?)

Answer 1

Occurs in the first 8 weeks. Cells divide and form tissue. Organs made.

Question 2

Fetal Period (When, What?)

Answer 2

Start of 9th week just until birth. Body grows and organs function.

Question 3

Weeks 1-12 (What?)

Answer 3

Embryonic Period of development. Cleavage, cell differentiation, and germ layers happen. Most sensitive to Teratogens.

Question 4

Weeks 9-12 (What?)

Answer 4

Growth speeds up and genitalia become recognizable.

Question 5

Weeks 13-24 (What?)

Answer 5

Fourth Month - Feels Movement
Fifth Month - Soft Hair
Sixth Month - Skin is wrinkled (due to lack of fat)

Question 6

Weeks 25-38 (What?)

Answer 6

Growth occurs quickly. Fat builds up and the digestive and respiratory systems are the last to develop fully.