Question
Download Solution PDFAppearance of hair on the head of human embryo occurs at this month of pregnancy
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF Key Points
- Appearance of hair on the head of a human embryo typically occurs during the 5th month of pregnancy.
- By the 5th month, the embryo develops lanugo, which is fine, soft hair that covers the body, including the head.
- Lanugo plays a crucial role in helping to regulate the fetus’s body temperature within the womb.
- This hair gradually disappears before birth or shortly after birth, as it is replaced by vellus or terminal hair.
Important Points
- The development of hair follicles begins early in the embryonic stage, but visible hair growth on the head starts during the 5th month.
- The growth of hair is part of the overall development of the fetus, including skin and appendages.
- Lanugo is a temporary protective mechanism for the fetus and is not permanent.
- Proper fetal development during this phase is crucial and can be influenced by maternal nutrition, health, and genetics.
Last updated on Jun 3, 2025
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