The Hair Shaft

Trichos is the greek word

• hair

• beauty

• beard

• skin

one of the functions of hair is _______________

• adornment

• protecting the head from water

• to show one's age

• All of the answers are correct

Hair and nails are composed of the same protein, ___________

• papilla

• catagen

• keratin

• canities

The cuticle is the ______________ layer of the hair.

• innermost

• middle

• thickest

• outermost

The _____________of the hair consists of a single overlapping layer(s) of transparent, scale-like cells that point away from the scalp toward the hair ends.

• cortex

• cuticle

• arrector

• medulla

The cortex layer______________

• is a single layer of cells

• accounts for most of the hair's weight

• is the outermost layer of the hair

• protects the hair from damage

The ___________ is the middle layer of the hair.

• cortex

• cuticle

• medulla

• pili

The medulla is also called the _______ of the hair

• pith

• marrow

• both a and b

• protein core

Round cells make-up the _________.

• medulla

• cuticle

• protein layer of the hair

• male beard

Hair is composed of protein that grows from cells that originate within the _____________.

• cuticle

• hair follicle

• cortex

• hair bed