|
|
head| The human head contains the brain and specialised sense organs such as the nose, tongue, ears, and eyes. In the embryo, as in evolution, the distinction between the head and the trunk by the formation of a cervical constriction occurs comparatively late, though long before this constriction appears the characteristic features of the parts have become developed. At first the head may be said to consist wholly of the cranial part, the face developing later. |
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
?Sign in  |
|---|
|
|
|