Human hair. Coloured scanning electron micrograph (SEM) of a human hair emerging from the epidermis (outer layer of skin). Hair is a fibrous protein (keratin),which develops out of a tubular hair follicle found in the epidermis. The shaft,the part visible,is composed of two layers; an outer layer or cuticle,which consists of flat overlapping cells. This covers the main body of the hair,the cortex,which contains hair colour pigments. Hair is useful in keeping humans warm | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 2894 px × 3858 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |