Exam 6: The Integumentary System

Ethnic differences in skin color are primarily caused by differences in

The youngest keratinocytes are found in the stratum basale.

is/are formed partly from the secretions of glands in the external ear canal.

This image shows strata and cell types of the epidermis."2" represents a , whereas "4" represents a .

The hypodermis usually has an abundance of this tissue.

Embarrassment can be perceived by an abnormal coloration of the skin called cyanosis.

Calluses or corns are the result of accelerated multiplication of

burns involve the epidermis, all of the dermis, and often some deeper tissue.

The is absent from most epidermis.

Melanin, hemoglobin, and carotene give color to the skin.

Hair and nails are composed of collagen.

Freckles are elevated patches with an abnormal coloration of the skin.

Basal cell carcinoma initially affects cells of the stratum , whereas melanoma arises from .

The skin does not include

Living keratinocytes exfoliate from the epidermis as tiny specks called dander.

The three forms of skin cancer are defined by the types of cells from which they originate.

A hair cycle consists of three developmental stages in the following order:

This image shows the structure of a hair and its follicle.What does "1" represent?

Leather is mostly made of the layer of the dermis, which is very tough due to the high concentration of fibers.

The least common but most deadly type of skin cancer is