Concept explainers
a.
To analyze: The phase of growth for the given hair type.
Introduction: Hairs are the appendages that are present in mammals and help in the protection of the skin. The hair shaft is made up of three layers and these are the outer cuticle, cortex, and medulla.
b.
To analyze: The phase of growth for the given hair type.
Introduction: The hair of animals is thicker than human as it functions to protect the outer surface of the body from injuries and also keeps the animal warm. Sometimes, the hair is modified into horns, nails, hoofs, and claws.
c.
To analyze: The phase of growth for the given hair type.
Introduction: Some hair types have two layers that are cortex and cuticle, however, some hair types also have an innermost layer that runs as a central canal through the hair shaft and is known as the medulla.
d.
To analyze: The phase of growth for the given hair type.
Introduction: The cuticle is the outer layer of the hair shaft which forms the protective keratin coating. This layer encloses the cortex and medulla layer and is important for maintaining the strength of the hair.
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