Close-up of fine hairs on a human arm rising and falling. Skin hairs rise in response to stimuli including cold, fear and awe. Technically known as piloerection, it is produced by the contraction of a small muscle (the arrector pili) at the base of each hair. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library |
Modell-Rechte: | vorhanden |
Länge: | 10 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |