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Pregnancy and Fetal Development

Picture of First Trimester (8 Weeks)

Picture of First Trimester (4 Weeks)

At 8 weeks during the first trimester, a baby has the following features:

  • Organs and body structures are beginning to take form.
  • The heart beats in a customary rhythm.
  • The limbs are growing longer and the fingers and toes are starting to form.
  • The sex organs are beginning to form.
  • The eyes move into a forward position on the face. Eyelids are apparent.
  • The umbilical cord is visible.
  • At 8 weeks gestational age, your baby is almost 1 inch long and weighs less than 1/8th of an ounce.
Image Source: Copyright © Scott Camazine / Phototake -- All rights reserved.

Text Reference: American Pregnancy Association: “Fetal Development: First Trimester”