WeMoms
2 Apr 2024

Lanugo Covers the Fetal Body

Pregnancy
Baby's growth during pregnancy
Lanugo Covers the Fetal Body
In the nineteenth week of your pregnancy, a unique phenomenon occurs—lanugo, fine hair, begins to cover your baby's body, serving as a protective blanket.
The Significance of Lanugo
Lanugo is a remarkable feature of fetal development, with several essential functions.
  • Insulation: It provides insulation, helping to regulate your baby's body temperature in the amniotic environment.
  • Protection: Lanugo acts as a protective barrier, preventing the amniotic fluid from irritating the delicate skin.
  • Sensory Stimulation: This fine hair can stimulate your baby's developing sensory receptors.
The Formation of Lanugo
During this week, lanugo starts to appear on your baby's body:
  • Body Coverage: Lanugo gradually covers your baby's entire body, including the face, back, and limbs.
  • Fine Texture: It has a fine texture and is typically soft to the touch.
  • Temporary Feature: Lanugo is a temporary feature and often begins to disappear later in pregnancy, typically around the thirty-eighth week.
Week 19 marks a significant phase in your pregnancy journey as lanugo begins to cover your baby's body, providing insulation, protection, and sensory stimulation.
This remarkable feature highlights the intricate nature of fetal development.
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