Comparison between Terminal hairs and Vellus hairs

Range Table - link
Organism Human Homo sapiens
Reference Robbins, Clarence R. Morphological and macromolecular structure, pp.1-62, chapter 1 in the book Chemical and physical behavior of human hair / Clarence R. Robbins.-2nd ed (2002) p.6 3rd paragraph
Comments P.6 2nd paragraph: "There are two types of scalp hair, vellus/Ianugo and terminal hair. Vellus hairs grow on those "hairless" areas of the body including the bald scalp, the nose, and many other areas of the body that appear hairless. Lanugo hair (prenatal/infant hair) is somewhat larger (thicker and longer) than adult vellus hair and is often lost prior to birth. It is usually replaced by primary terminal hair by age 2. Terminal hairs are normally long thick hairs, generally finer and shorter on the scalps of children than for adults. At puberty, secondary terminal hair develops that is larger and thicker particularly for axillary, pubic, and beard hair of males."
Entered by Uri M
ID 116428