A&P 1- Chapter 5 Mastering Assignments

Vitamin D3 formed within the skin has all of these effects on other organ systems except that it

functions in the activation of plasma cells by the lymphatic system.

Which hormone, released during times of stress, can loosen the connections between keratinocytes?

glucocorticoids

Cyanosis signifies that a patient has

oxygen-starved skin.

Identify the five layers of the epidermis (from superficial to deep). (Module 5.2B)

stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale

Each of the following is a function of the integumentary system except

synthesis of vitamin C.

All of the following are true of the dermis EXCEPT that __________.

the hypodermis is part of the dermis

What mode of secretion do the eccrine sweat glands utilize?

merocrine

Distinguish among a first-degree, second-degree, and third-degree burn. (Module 5.5A)

A first-degree burn affects only the surface of the skin. A second-degree burn affects the whole epidermis and some of the dermis. A third-degree burn destroys the epidermis, the dermis, and extends into the subcutaneous layer.

________ is a pigment found in vegetables that can make the skin appear orange or yellow.

Carotene

What is the initial response of the skin to being exposed to the ultraviolet rays of sunlight?

Epidermal cells produce cholecalciferol.

What are the primary effects of calcitriol on the body? Check all that apply.

Increase blood concentration of phosphorus. Increase blood concentration of calcium.

Art-labeling Activity: Cutaneous membrane and accessory structures

PICTURE

Art-labeling Activity: Layers of the epidermis

PICTURE

Place the images in the correct order in which they happen from left to right. Images may overlap for simultaneous processes.

PICTURE

According to the textbook, which of the following organs is stimulated by calcitriol?

Small intestine

The effects of aging on the skin include

a decline in the activity of sebaceous glands.

Several hours after an injury to the skin and a scab has formed, cells from which integumentary layer undergo rapid divisions and begin to migrate along the edge of the wound?

cells of the stratum basale of the epidermis

Identify the two major components of the cutaneous membrane. (Module 5.1A)

dermis and epidermis

What is the composition of the nail body?

dead cells

With aging, hair turns gray or white due to which of the following causes?

decreased melanocyte activity

The most dangerous type of skin cancer is termed

malignant melanoma.

Immediately after an initial injury to the skin, bleeding and __________ occur.

mast cell activation

In dark-skinned individuals, __________.

the melanosomes are more numerous