Which term describes the short, fine hair that covers a fetus and typically sheds within a few weeks after birth?

Which term describes the short, fine hair that covers a fetus and typically sheds within a few weeks after birth?

• A. Lanugo hair
• B. Sebum
• C. Trichology
• D. Nervous system

Answer: (A)

Lanugo is the fine, downy hair that covers a fetus in the womb. It normally sheds within a few weeks after birth as the skin matures and is replaced by vellus hair. This hair is typically very soft, pale, and unpigmented, and its disappearance is a normal part of early development (though some premature babies may retain small patches longer). Sebum is an oily secretion from glands, not hair. Trichology is the study of hair, not a type of hair. The nervous system is a body system and has no relation to this hair type.

Lanugo is the fine, downy hair that covers a fetus in the womb. It normally sheds within a few weeks after birth as the skin matures and is replaced by vellus hair. This hair is typically very soft, pale, and unpigmented, and its disappearance is a normal part of early development (though some premature babies may retain small patches longer). Sebum is an oily secretion from glands, not hair. Trichology is the study of hair, not a type of hair. The nervous system is a body system and has no relation to this hair type.