Integumentary System Review

Which layer of the skin contains the only cells of the epidermis that are capable of dividing by mitosis?​

• stratum spinosum

• stratum lucidum

• stratum germinativum

• stratum corneum

Cells that are responsible for producing skin color are called ____.

• keratinocytes

• ​melanocytes

• fibroblasts

• Meissner’s corpuscles

A thickened area of the skin that results from excess friction is known as a ____.

• papilla

• nail body

• Langerhans cell

• callus

Which layer of the skin is the deepest and most important layer of the epidermis?

• stratum germinativum

• ​stratum granulosum

• stratum lucidum

• stratum spinosum

A burn that involves complete destruction of both the epidermis and the dermis is a ____-degree burn.​

• fourth

• first

• second

• third

The subcutaneous tissue that contains a lot of fat is the ____.

• ​peridermis

• dermis

• hypodermis

• epidermis

Each individual ____ is composed of the cuticle, the cortex, and the medulla.

• hair

• arrector pili

• skin

• nail

Which structure is a bundle of smooth muscle fibers that are attached to the hair follicle?

• cuticle

• root

• medulla

• arrector pili

The white crescent at the proximal end of the nail is called the ____.

• lunula

• root

• nail bed

• medulla

Melanocytes produce the pigment keratin.

• true

• false