Chapter 11 (#2.5)

alopecia areata is due to a (an)

• immune disorder

• genetics

• scalp disorder

• poor hygiene

The ______ of the hair has a fibrous protein core formed by Elongated Cells

• epidermis

• cuticle

• medulla

• cortex

Protein structures within the cortex are responsible for the _____ and elasticity of the hair.

• color

• length

• diameter

• density

A medulla is almost never found in ______ hair.

• terminal

• color treated

• vellus

• gray

Each of the 3 side bonds, hydrogen, sulfur and disulfide, account for 1/3 of the hairs __________

• strength

• color

• keratin

• elasticity

______ is the protein that makes up 90% of the hair.

• Keratin

• melanin

• paragen

• fat

The cuticle layer _________ the inner structure of the hair.

• conceals

• protects

• dries out

• lubricates

The 2 (two) hair growth treatments approved by the FDA are...

• Rogain and Fenasteride

• Finasteride and cianide

• minoxidil and finasteride

• Rogain and Minoxidil

The cortex layer has _______ of the hairs weight

• 100%

• 20%

• 50%

• 90%

The cortex is made up of _________ of polypeptide chains.

• dozens

• millions

• hundreds

• thousands