4 Weeks Gestation

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week4

  • The brain and the spinal cord begin to form.
  • The heart begins to form.
  • The stomach and intestines are forming.
  • Bone tissue is growing.
  • The eyes and ears are just beginning to form.
  • The weight is less than one ounce.
  • The length is less than 1/8 inch.



© 2003 Texas Department of Health. All rights reserved. Photos: Lennart Nilsson / Albert Bonniers Forlag AB, A Child Is Born, Dell Publishing Company. Used by permission.

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Last updated December 05, 2012