Hair and Fiber Review

Front

What is the medullary index?

Back

The medullary index is the ratio of the diameter of the medulla (the central core of a hair) to the diameter of the entire hair shaft. It helps in determining whether a hair is human or animal.

Front

What does a medullary index of .59 indicate?

Back

A medullary index of .59 indicates that the hair is likely from an animal.

Front

What is polyester and how is it related to clothing?

Back

Polyester is a synthetic fiber made from recycled materials, such as water bottles, and is known for making shirts and other clothing last longer.

Front

What is a natural fiber?

Back

A natural fiber is a fiber that is obtained from plants or animals, such as cotton, wool, or silk.

Front

Give an example of a natural fiber.

Back

Wool is an example of a natural fiber.

Front

What is the hair shaft?

Back

The hair shaft is the visible part of the hair that extends above the skin, and it does not include the follicle or papilla.

Front

What are the components of hair?

Back

Hair is primarily composed of keratin, a protein, and has three main parts: the cuticle, cortex, and medulla.

Front

What is the role of the hair follicle?

Back

The hair follicle is the structure in the skin that produces hair and anchors it into the skin.

Front

What is a medulla pattern?

Back

A medulla pattern refers to the arrangement of the medulla within the hair shaft, which can be fragmented, continuous, or intermittent.

Front

Which of the following is NOT a medulla pattern?

Back

Spinous is NOT a medulla pattern; it refers to a type of scale pattern found in animal hair.