|
Hair
|
Timing
|
Source |
The first hair follicles appear.
|
Day 44 after fertilization |
Larsen, p xii |
| Hair follicles first appear on the
eyebrows, eyelids, upper lip, and chin. |
End 2nd month |
Larsen, p 309 |
| Hair begins to develop. |
9th - 12th weeks after fertilization |
Moore, p 517 |
| Scattered rudiments of hair appear. |
End of 10th week after fertilization |
Williams, p 154 |
| Hair grows on the eyebrows and the
upper lip. |
End of 12th week after fertilization |
Moore, p 517 |
| The first hairs appear in the region
of the eyebrows and upper lip. |
End of 3rd month. |
Sadler, p 407 |
| Scalp hair patterning is determined. |
14th week after fertilization |
Moore, p 112 |
| Some scalp hair is visible. |
Endo of 18th week after fertilization |
Williams, p 154 |
| Head hair is visible. |
By the 5th month after fertilization |
Sadler, p 114 |
| Hair becomes easily recognizable. |
About 20th week after fertilization |
Moore, p 517 |
| Head and body hair is visible. |
20th week after fertilization |
Williams, p 155 |
