Hair grows from a tube-like "pocket" called a root sheath or a(n):

The follicle in straight hair is typically oval

The hair follicle that produces tightly curled/coily hair is typically:

The layer of hair consisting of unique protein structures that give the hair most of its pigment and strength (elasticity) is called the:

Sebum helps protect the hair and skin from becoming too dry

What is the portion of hair that extends above the skin's surface?

The papilla supplies nourishment to the:

Which of the following terms is another name for cell division?

The central core of the hair strand sometimes missing in fine or very fine hair is the cortex

Which of the following terms is known as the active growing stage of hair?

Catagen, a brief transitional stage of hair growth, lasts for what amount of time?

How long does the telogen, or resting stage of hair growth, last?

Hair with normal ability to absorb moisture is said to have what kind of porosity?

The number of active hair follicles per square inch on the scalp refers to:

Fragilitis crinium is the technical name for:

An abnormal coverage of hair on areas of the body where normally only lanugo, or baby-fine hair appears, is a condition known as:

Excessive matting of the hair is referred to as:

A disorder that refers to a chronic scalp condition with excessive flaking, which accumulates on the scalp or falls to the shoulders, is known as dandruff or:

The medical term for greasy or waxy dandruff is:

Tinea is the medical term for: