How Hair Grows Flashcards
Hair is a derivative of _
Skin
The medulla, cortex, and cuticle are composed of _
Dead keratinized cells
Medulla consists of large cells containing _
Soft keratin
Soft keratin partially separated by _
Air space
Cortex consists of several layers of _
Flattened, hard keratin, containing cells
Cuticle contains _
Single layer roof tile keratin cells
Outer layer contains most keratin and _ the hair (2)
Strengthens
Protects
Strengthens and protects hair, helping keep _
Inner layers compacted
Cuticle wears away as hair becomes older and is _
Damaged
Keratin fibrils in medulla and cortex escape, causing _
Split ends
Hair follicle composed of _ root sheath and _ root sheath
Outer connective tissue
Inner epithelial
_ is vestibule part of hair above skin
Hair shaft
Hair bulb contains a _
Matrix of growing part of hair
