Picture of Second Trimester (24 Weeks)

Bone marrow begins to make blood cells.
Taste buds form on your baby's tongue.
Footprints and fingerprints have formed.
Real hair begins to grow on your baby's head.
The lungs are formed, but do not work.
The hand and startle reflex develop.
Your baby sleeps and wakes regularly.
If your baby is a boy, his testicles begin to move from the abdomen into the scrotum. If your baby is a girl, her uterus and ovaries are in place, and a lifetime supply of eggs have formed in the ovaries.
Your baby stores fat and has gained quite a bit of weight. Now at about 12 inches long, your baby weighs about 1½ pounds.

Reviewed by William C. Shiel Jr., MD, FACP, FACR on August 21, 2009

Image Source: Neil Bromhall / Genesis Films / Photo Researchers, Inc.

Text: Womenshealth.gov - Healthy Pregnancy: Stages of Pregnancy