A&P 1 chapter 6 final exam 🔶100

What determines the color of skin

The amount of melanin that melanocytes produce.

When the arrector pili muscles contract,

"goose bumps" form on the skin

The functions of the skin include: Acting as a protective covering Housing sensory receptors Regulating body temperature All of the above

All of the above

The skin dissipates excess body heat by A) dilating dermal blood vessels B) activating eccrine sweat glands C) radiation D) all of the above

All of the above

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

Dermal blood vessels constrict

Which of the following statement is false

Sebaceous glands are an example of apocrine glands

Which of the following statements concerning the epidermis is true

The epidermis is nourished by blood vessels located in the dermis.

Which of the following is not correct concerning the skin

The subcutaneous layer is between the dermis and the epidermis.

Skin cells play an important role in producing

Vitamin D

eccrine sweat glands

aid in cooling the body

A genetic disease characterized by the inability to produce melanin is

albinism

A person exercising vigorously on a hot, humid day may develop A) fatigue and dizziness B) heat exhaustion C)headache, muscle cramps and nausea D) all of the above

all of the above

Individuals at elevated risk for hypothermia include A) homeless people exposed to outdoors B) the very old and the very young C) very thin people D) all of the above

all of the above

Apocrine sweat glands are most abundant on or in the

axilla

Due to the contraction of smooth muscle in the walls of the dermal blood vessels

body heat is conserved

By reducing body temperature during hot weather skin helps to maintain

body temperature homeostasis

The bluish tinge of skin due to a reduction of oxygen in the blood is called

cyanosis

The dermis is composed largely of

dense irregular connective tissue

Fingerprints and footprints are produced by projections into the epidermis called

dermal papillae

The layer of epithelium that covers the skin is called the

epidermis

Which of the following will help cool the body

evaporation of sweat from the skin's surface

Sebaceous glands secrete

fat globules that mix with cellular debris, forming sebum.

A slight sunburn is an example of a ______ burn.

first degree

What type of burn involves damage to the epidermis, dermis and subcutaneous tissue

full thickness

The portion of hair that protrudes above the surface of the skin is the

hair shaft

By covering the whole body surface skin acts as a protective barrier and plays a role in

immunity

thick skin

is found in areas subject to pressure or friction such as palms.

Intact skin provides protection because

it forms a physical barrier against the entry of microbes

The hardness of a nail comes from

keratin

The activity of apocrine sweat glands

leads to body odor

Hypothermia is?

lowered body temperature

Exposure to ultraviolet light darkens skin by stimulating synthesis of

melanin

Melanin is produced only by

melanocytes

The nail consist of

nail bed and nail plate

Keratinization

produces a layer of cells that resist abrasion

Which of the following functions is associated with the skin

protection against ultraviolet radiation of the sun

Skin color is the result of the

quantity of melanin in the skin

Inflammation makes skin

red, swollen and painful to touch.

The amount of body area involved with a burn is determined by the

rule of nines

The human integumentary system includes

skin, nails, hair follicles, and sweat glands

The layer of epidermis that undergoes mitosis and forms new epidermal cells is the

stratum basale

Excessive shedding of this layer of the epidermis of the scalp is responsible for dandruff

stratum corneum

This stratum contains many layers of dead squamous cells

stratum corneum

Which layer of the epidermis is found in only a few areas of the body

stratum lucidum

In which layer of the epidermis are lamellar bodies formed inside keratinocytes

stratum spinosum

A burn affecting only the epidermis is a

superficial partial-thickness burn