Which of the following is not the accessory structure of the skin? A:hair B: nail C:sweat gland D:sebum 答案: sebum

Which of the following is not the accessory structure of the skin?

A:hair
B: nail
C:sweat gland
D:sebum
答案: sebum

相关试题

___ protrudes into the hair bulb and provides nutrients for the growing hair.

A:Hair papilla
B:Hair follicle
C:Hair root
D:Arrector pili muscle
答案: Hair papilla