SCI 335 Week 3 Quiz 6

SCI 335 Week 3 Quiz 6 | Wilmington University

Week 3 - Test Chapter 6

Question 1

A hair is distinguished from a hair follicle by    

·         strictly the position, with the hair being in the center of the follicle.  

·         being composed of living stratified squamous cells, whereas a hair follicle is composed of dead dermal cells.  

·         being composed of dead epidermal cells, whereas a hair follicle is composed of living epidermal cells.  

·         originating in the subcutaneous layer, whereas a hair follicle originates from the dermis.

Question 2

As epidermal cells are pushed toward the surface, strands of protein called ______ develop in their cytoplasm.

Question 3

Shafts of hair are composed of    

·         dead dermal cells.  

·         living epidermal cells.   

·         living dermal cells.  

·         dead epidermal cells.

Question 4

Melanin functions to protect underlying cells against the effects of ______ ______.

·         ultraviolet light

·         ultraviolet radiation

·         ultraviolet radiation

Question 5

Injections that are administered into the tissues within the skin are called    

·         subcutaneous. 

·         intramuscular.  

·         hypodermic.  

·         intradermal.

Question 6

Exposure to ultraviolet light causes the skin to darken by stimulating the production of    

·         hemoglobin.  

·         melanin.  

·         cyanin.  

·         carotene.

Question 7

When the smooth muscle in the walls of dermal blood vessels contract,    

·         more blood enters the dermis.  

·         body temperature tends to drop.  

·         body heat is conserved.  

·         the vessels become dilated.

Question 8

A burn that involves only the epidermis is called a    

·         third degree burn.  

·         deep partial-thickness burn.  

·         superficial partial-thickness burn.  

·         second degree burn.

Question 9

The dermis is composed largely of    

·         adipose tissue.  

·         epithelial tissue.  

·         loose connective tissue.  

·         fibrous connective tissue.

Question 10

The nail plate is produced by    

·         melanocytes.  

·         lunula cells.  

·         specialized dermal cells.  

·         specialized epithelial cells.

Question 11

Which of the following is a normal response to excessive loss of body heat in a cold environment?    

·         Skeletal muscles contract involuntarily.  

·         Dermal blood vessels become constricted.  

·         Sweat glands become inactive.  

·         All of these are correct.

Question 12

Which of the following layers of the epidermis consists of a single row of squamous cells that undergo mitosis and includes pigment-producing melanocytes?    

·         stratum germinativum  

·         stratum granulosum  

·         stratum corneum  

·         stratum spinosum

Question 13

Dark hair contains an abundance of the pigment called ______.  

Question 14

The deepest cells of the epidermis make up the stratum ______.

Question 15

The subcutaneous layer consists of    

·         epithelium and loose connective tissue.  

·         loose connective tissue and adipose tissue.

·         adipose tissue and skeletal muscle tissue.  

·         epithelial tissue.

Question 16

Epidermis is distinguished by being ______, whereas dermis is distinguished by being ______.    

·         composed of stratified squamous epithelial tissue; composed of fibrous connective tissue  

·         the outermost layer of the skin; composed of stratified squamous epithelial tissue  

·         composed of largely fibrous connective tissue; composed of stratified squamous epithelial tissue  

·         the innermost layer of the skin; under the epidermis

Question 17

Cutaneous melanomas seem most commonly to be caused by    

·         exposure to background radiation.  

·         occasional exposure to X- rays.  

·         relatively short exposure to high-intensity sunlight.  

·         prolonged exposure to low-intensity sunlight.

Question 18

Body temperature normally remains close to ______ degrees C.

Question 19

The ______ glands of the skin function as scent glands.

Question 20

What determines the color of skin?    

·         the thickness of the epidermis layer  

·         None of these is correct.  

·         the amount of melanin produced by melanocytes 

·         the number of melanocytes in the epidermis

Question 21

Sweat functions to cool the body by    

·         radiation.  

·         convection.  

·         conduction.  

·         evaporation.

Question 22

Eccrine sweat glands differ from sebaceous glands    

·         in their location in the body.  

·         All of these are correct.  

·         in terms of what is secreted.  

·         because sebaceous glands are associated with hair follicles, whereas sweat glands are not.

Question 23

The functions of skin include    

·         producing adipose tissue.  

·         synthesizing antibodies.  

·         regulating body temperature.  

·         synthesizing digestive enzymes.

Question 24

The nerve fibers scattered throughout the dermis are associated with    

·         All of these are correct.  

·         muscles.  

·         sensory receptors.  

·         glands.

Question 25

Acne is a disorder involving the    

·         hair follicles.   

·         sebaceous glands.  

·         apocrine glands.  

·         sweat glands.

Question 26

Eccrine sweat glands    

·         respond primarily to elevated body temperature.  

·         respond primarily to emotional stress.  

·         are most common in the armpits and groin.  

·         usually are associated with hair follicles.

Question 27

Which of the following is not correct concerning the skin?    

·         The dermis is usually thicker than the epidermis.  

·         The epidermis is composed of stratified squamous epithelium.  

·         The dermis contains smooth muscle and nerve tissue.  

·         The subcutaneous layer is between the dermis and the epidermis.

Question 28

Epidermal cells are supplied with nutrients from blood vessels located in the    

·         dermis.  

·         All of these are correct.  

·         epidermis.  

·         subcutaneous layer.

Question 29

In treating a burned patient, the "rule of nines" is used to estimate the    

·         time needed for healing.  

·         depth of the burn.  

·         surface area of the burn.  

·         type of scar that will form.

Question 30

In which of the following regions of the body are apocrine sweat glands most numerous?    

·         axilla  

·         forehead  

·         neck  

·         palms of the hands