Hair Anatomy Shaft: portion of hair that projects from skin surface
{"Image DocumentName": "Hair Anatomy Shaft: portion of hair that projects from skin surface", "Image ImageDescription": "Root: portion of hair deep to the shaft penetrating the dermis. Has 3 layers: medulla. cortex. cuticle. Base of the hair follicle. Bulb: houses the papilla which contains the blood vessels that nourishes the growing hair follicle. Matrix: responsible for hair growth and produces new hair. Arrector pili: smooth muscle. Extends from the dermis to the side of hair follicle. Hair root plexus - dendrites of neurons which are sensitive to touch.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}