Accessory structures of the skin Flashcards
Hair grows all over the body except for which two places?
Palms of hands and soles of feet.
When does coarse pubic and auxiliary hair develop?
Puberty
What layer of skin does hair grow from?
The epidermis.
Which part of the hair follicle extends over the surface of the skin?
The hair shaft.
What part of the hair follicle is the deepest?
Medulla.
What part of the hair is superficial to the medulla?
Cortex.
What part of the hair is superficial to the cortex?
Cuticle.
What part of the hair is superficial to the cuticle?
Hair root.
What muscle makes the hair stand up and activates shivering?
Arrector pili muscle.
Why does hair lose its color and turns white?
The stem cells lose their ability to produce pigments of melanin.
What are the three regions of the nail?
Nail body.
Root.
Lunula.
What nail part am I?
The visible part of each nail?
Nail body.
What nail part am I?
Part of the nail in groove hidden by a fold of skin (the cuticle)
Root.
What nail part am I?
Moon-shaped white area nearest root?
Lanula
