Skin Quiz

In which layer of epidermis do the nucleus and other organelles disintegrate, and the cells die?

a) stratum basale b) stratum corneum c) stratum granulosum d) stratum lucidum e) stratum spinosum correct answer: b

Of the five epidermal cell layers, the only one that can undergo mitosis is

a) stratum basale b) stratum lucidum c) stratum corneum d) stratum granulosum e) stratum spinosum correct answer: a

The superficial outer layer of the epidermis is

a) stratum basale b) stratum lucidum c) stratum corneum d) stratum granulosum e) stratum spinosum correct answer: c

The stratum germinativum includes both the stratum basale and the

a) stratum corneum b) stratum granulosum c) stratum lucidum d) stratum reticularis e) stratum spinosum correct answer:

Which of the following is NOT an epidermal derivative?

a) sweat glands b) sebaceous glands c) hair follicles d) sensory receptors correct answer: d

Skin color is determined by

a) the amt of carotene in stratum corneum and subcutaneous tissue b) pigments in the epidermis( melanin) c) the degree of oxygenation of the blood d) all of the above correct answer: d

Thick skin

a) usually lacks the stratum lucidum b) is typically found on the back c) does not produce hair d) unlike thin skin develops calluses and corns e) all of these correct answer: d

Which of the following relationships is INCORRECT?

a) visceral peritoneum/outer surface of the small intestine b) parietal pericardium/outer surface of the heart c) perietal pleura/wall of thoracic cavity d) visceral pleura/outer surface of the lungs correct answer:

Which of the following is a function of the skin

a)body temp control via sweating and heat radiation b) production of vitamin D c) protection from bacterial invasion d) all of the above correct answer: d

Although you get wet while swimming, a tough protein within the skin prevents it from soaking up moisture like a sponge. The substance is

a)serous fluid b) melanin c) carotene d) keratin correct answer: d

Keratin is an important skin pigment that protects against ultraviolet light

False

Lanugo is the technical term used for adult body hair

False

One way of stimulating hair to grow faster is to cut or shave it off

False

Sensory receptors are found in the epidermis

False

The dermis contains both voluntary and involuntary muscle fibers

False

Third degree burns are less severe than first degree burns and therefore not as painful

False

A primary function of the dermal epidermal junction is to glue together the dermis and the epidermis

True

Besides changing the rate of metabolism, the primary means of controlling body temperature is through changes in the size of blood vessels in the skin

True

During the life of an individual epidermal tissue is constantly being replaced

True

Goose pimples, elevation of the testes, and erection of the nipples are the result of the contraction of muscles in the dermis.

True

One of the factors associated with the common type of baldness is the presence of testosterone

True

Skin thermal receptors provide important information to the heat regulating centers in the brain resulting in autonomic regulation of internal body temperature

True

The basic ingredient in the skin that determines skin color is melanin

True

The epidermis is referred to as the true skin

True

The hypodermis or superficial fascia is a subcutaneous layer rich in fat and areolar tissue.

True

The ratio of surface area to body volume is less in children than in adults, and therefore a child is more susceptible to the loss of body heat than is an adult

True

Turnover time for epidermal tissue can be accelerated by injury

True

Which is NOT a true statement about the papillary layer of the dermis?

a) It is the deepest layer of the skin b) It produces the pattern for fingerprints c) It contains nerve endings that respond to touch and temperature stimuli d) It is highly vascular correct answer: a

A major function of the skin is protection from

a) abrasion b) ultraviolet light c) entry of microorganism d) dehydration e) all of these correct answer: e

The appearance of the skin is helpful in diagnosing certain pathological conditions. For example it may hint at

a) anemia b) liver malfunction c) allergy d) respiratory disorder e) all of the above correct answer: e

Acne is a disorder associated with inflammation of the

a) apocrine sweat glands b) sebaceous glands c) eccrine glands d) hair follicles correct answer: b

Which of the following homeostatic imbalances of the skin is cause by a virus?

a) atheletes foot b) cold sores c) impetigo d) contact dermatitis e) all of the above correct answer: b

The body's temp control center is located in

a) cerebrum b) medulum c) thalum d) hypothalamus correct answer: d

The conversion of water from a liquid state into a gaseous state happens when the form of body heat loss

a) convection b) evaporation c) radiation d) conduction correct answer: b

The type of body heat loss characterized by heat transfer from the surface of one object to another without actual contact is

a) convection b) evaporation c) radiation d) conduction correct answer: c

A person leaning against a cold cement block wall would lose heat by the process of

a) convection b) evaporation c) radiation d) conduction correct answer: d

Which of the following is NOT a function of the skin

a) defense against disease organism b) synthesis of vitamin E c) regulation of body temp d) excretion of water and salts correct answer: b

The layer of skin that is composed of dense connective tissues and has projections called papilae is the

a) dermis b) hypodermis c) stratum corneum d) stratum basale e) stratum lucidum correct answer: a

This layer contains loose connective tissue and has about half of the body's stored fat.

a) dermis b) hypodermis c) stratum corneum d) stratum basale e) stratum lucidum correct answer: b

In which of these layers are melanocytes found?

a) dermis b) hypodermis c) stratum corneum d) stratum basale e) stratum lucidum correct answer: d

The __________ consists of many layers of dead squamous cells surrounded by lipids.

a) dermis b) hypodermis c) stratum corneum d) stratum basale e) stratum spinosum correct answer: c

A second degree burn is characterized by

a) destruction of the both the epidermis b) severe pain, generalized swelling c) minor discomfort d) involvement of muscles, fasciae, or bones correct answer: a

The rule of nines is helpful clinically in

a) diagnosing skin cancer b) estimating the extent of burn c) preventing acne d) none of the above correct answer: b

The type of gland associated with blackheads is

a) eccrine b) apocrine c) sebaceouse d) ceruminous correct answer: c

The type of gland that produces the waxy secretion in the external ear canal is

a) eccrine b) apocrine c) sebaceouse d) ceruminous correct answer: d

When the body temp rises, which of the following takes place?

a) eccrine glands become active b) arrector pili muscles contract c) pacinian corpuscles are stimulated d) blood is prevented from reaching skin capillary beds e) all of the above correct answer: a

The epidermis is nourished by diffusion from capillaries in the

a) epidermis b) reticular layer of the dermis c) papillary of the dermis d) hypodermis e) subcutaneous tissue correct answer: c

Most of the cells of the epidermis are

a) fibroblasts b) keratinocytes c) Langerhans cells d) macrophages e) melanocytes correct answer: b

Joe just burned himself on a hot pot. A blister forms and the burn is painful. Joe's burn is most likely a

a) first-degree burn b) second-degree burn c) third-degree burn d)Simon Legree burn correct answer: b

The specific layer that shapes the ridges for fingerprints and footprints is the

a) hypodermis b) papillary of the dermis c) reticular layer of the dermis d) underlying muscle layer e) superficial bony layer correct answer: b

Which of the following is not a means the body normally uses to raise body temperatures?

a) increase voluntary muscle contraction b) dilate surface blood vessels c) increase catabolism of energy supply d) reduce sweat secretion correct answer: b

Which of the following is NOT a characteristic of aging

a) increased activity of sweat glands b) increased brown spots on the skin c) increased fragility of blood vessels in the skin d) decreased adaptability to warm weather correct answer: a

The tanning effect that occurs when a person is exposed to the sun is somewhat protective due to

a) increased production of melanin that helps to block ultraviolet light b) an increased concentration of keratin that toughens the skin c) added layers of epidermis that thicken the skin d) an increased blood supply that carries the heat of the sun away correct answer: a

Sebum

a) lubricates the surface of the skin and hair b) consists of dead cells and fatty substances c) is actively produced when the sebaceous glands are activated by male sex hormones d) all of the above correct answer: d

Which of the following is/are found in the dermis?

a) melanocytes b) keratin c) stratum corneum d) pain and touch receptors correct answer: d

The apocrine sweat glands are

a) most responsible for odor in humans b) found primarily in the axillary and anogenital areas c) more often than not associated with hair follicles d) become active at puberty e) all of the above correct answer: e

The membrane lining of body cavities open to the exterior is

a) mucosa b) serosa c) the cutaneous membrane d) a synovial membrane correct answer: a

The membrane composed of connective tissue only is

a) mucosa b) serosa c) the cutaneous membrane d) a synovial membrane correct answer: d

If a person has severe burns, the two most life-threatening concerns are

a) pain and loss of intact skin b) dehydration and infection c) loss of mobility and sensation d) redness and swelling correct answer: b

Striae occur as a result of

a) pimples b) overstretching the dermis c) losing too much epidermis d) too many fibers in the hypodermis e) loss of hair follicles correct answer: b

Destruction of the hair bulb would result in its inability to

a) produce gooseflesh b) grow c) resist drying d) produce oil correct answer: b

Sebaceous glands are important for

a) production of keratin b) keeping skin and hair soft and flexible c) production of sweat d) heat regulation of the body correct answer: b

The most external skin region is composed of

a) simple columnar epithelium b) stratified sqaumous epithelium c) areolar connective tissue d) dense fibrouse connective tissue correct answer: b

The type of cancer associated with changes in a mole is

a) squamous cell carcinoma b) malignant melanoma c) basal cell carcinoma d) columnar cell carcinoma correct answer: b

Cell division occurs in which layer of the epidermis?

a) stratum basale b) stratum corneum c) stratum granulosum d) stratum lucidum e) stratum reticularis correct answer: a