Integumentary System

What layer of the skin contains Keratinocytes, Melanocytes, Merkel Cells, and Langerhan Cells? A. Epidermis B. Hypodermis C. Dermis D. Dermal Papillae

A. Epidermis

The ________ acts as an insulator for the body? A. Hypodermis B. Dermis C. Sebaceous Tissue D. Dermis

A. Hypodermis

Swelling of the skin is also known as A. Odema B. Dematitis C. Xeroderma D. Necrosis

A. Odema

The sebaceous glands are found everywhere on the body except? A. Palms & Soles B. Back C. Neck & Ears D. Head

A. Palms & Soles

A layer of epidermis made of a single layer of flat, square cells A. Stratum basale B. Stratum corneum C. Stratum Lucidum D. Stratum granulosum

A. Stratum basale

Langerhans cells are commonly found in the ________. A. Stratum spinosum B. Stratum corneum D. Stratum granulosum E. Stratum basale

A. Stratum spinosum

Function (s) of melanocytes? A. UV protection B. Sensation C. Immunity D. Make new cells

A. UV protection

All of the following are part of the integumentary system except A. bones B. skin C. nails D. hair

A. bones

Sweat glands are located in the ... A. dermis B. epidermis C. hypodermis D. BOTH A& B

A. dermis

Epidermal cells are supplied with nutrients from blood vessels in the A. dermis. B. epidermis. C. hypodermis. D. both A and B above E. all of the above

A. dermis.

Which layer of the skin is composed of adipose tissue? (1 point) A. hypodermis (subcuntaneous) B. dermis and hypodermis C. epidermis D. dermis

A. hypodermis (subcuntaneous)

A person with dark skin has a _____ allows them to be better protected from the sun. A. increased production of melanin that helps block UV light B. an increased concentration of keratin that toughens the skin C. an increased blood supply that carries the heat of the sun away D. a decreased blood supply that blocks melanocyte activity

A. increased production of melanin that helps block UV light

Which layer of the epidermis is considered the "dead layer" because of their inability to get nutrients and oxygen, and is composed of keratin? A. stratum corneum B. stratum granulosum C. stratum basale D. stratum lucidium

A. stratum corneum

The layer of the epidermis at the surface is the A. stratum corneum. B. stratum lucidum. C. stratum germinativum. D. stratum granulosum. E. stratum spinosum

A. stratum corneum.

Which epidermal layer is found only in thick skin? A. stratum lucidum B. stratum granulosum C. stratum corneum D. stratum germinativum

A. stratum lucidum

Sudoriferous gland produce A. sweat B. Oil C. Sebum D. Collagen

A. sweat

In humans, exposure of the skin to sunlight is required for ________. A. vitamin D synthesis B. arteriole constriction C. folate production D. thermoregulation E. both A & C

A. vitamin D synthesis

Sweat contains A. water, salts and wastes. B. sebum. C. water only. D. dead cells, urea and sodium chloride. E. Oil, uric acid, proteins

A. water, salts and wastes.

What is the deepest layer of the epidermis that regenerates new cells? A)stratum corenum B)stratum basale C)stratum granulosum D)stratum lucidum

B)stratum basale

The palms of the hands and soles of the feet have how many epidermal layers? A. 2 B. 5 C. 4 D. 3 E. 6

B. 5

The papillary and reticular layers of the dermis are composed mainly of ________. A. Adipose Tissue B. Connective Tissue C. Melanocytes D. Keratinocytes

B. Connective Tissue

If Albert's production/ingestion of vitamin D decrease, his ability to absorb calcium in his intestine will: A. Increase B. Decrease C. No change D. Both A & B

B. Decrease

If you cut yourself and pathogen enter the wound, which of the following cells would help get rid of the pathogen? A. Merkel cells B. Langerhans cells C. Melanocytes D. keratinocytes E. Reticulocytes

B. Langerhans cells

This pigment absorbs ultraviolet light. A. Keratin B. Melanin C. Melatonin D. Carotene

B. Melanin

Name the epidermal layer fully keratinized? A. Stratum basale B. Stratum corneum C. Stratum lucidum D. Stratum granulosum

B. Stratum corneum

What sweat gland is located in the axillary and genital areas of the body? A. none of these B. apocrine glands C. sebaceous glands D. eccrine glands

B. apocrine glands

Eccrine sweat glands ________. A. are present on hair B. are present in the skin throughout the body and produce watery sweat C. produce sebum

B. are present in the skin throughout the body and produce watery sweat

What term means pertaining to a type of tissue that does not have blood vessels? A. vascular B. avascular C. epidermis D. dermis

B. avascular

From which of the following does the basic structure of hair and nails form? A. collagen B. keratin C. melanin D. elastin

B. keratin

10.Although you get wet while swimming, a tough protein with the skin prevents the skin from soaking up moisture like a sponge. What is this substance? A. melanin B. keratin(protein) C. mucus D. ca

B. keratin(protein)

Thick skin can be found on the A. back. B. palms. C. legs. D. arms. E. chest.

B. palms.

Which of these below has no blood supply (avascular) of its own? A. both the dermis and the hypodermis B. the epidermis only C. hypodermis only D. the dermis only

B. the epidermis only

As cells are pushed from the deeper portion of the epidermis toward the surface, A. they divide. B. they die. C. their nutrient supply increases. D. they enter the dermis. E. all of the above

B. they die.

The function of melanin is A. to help control the rate of heat loss by the skin B. to absorb harmful UV radiation. C. to produce sweat D. to produce a waterproof covering on the surface of the skin

B. to absorb harmful UV radiation.

A patient comes into the ER with burns down her leg. You notice that the burns are down to the muscle. What kind of burn is this? A. 1st degree burn B. 2nd degree burn C. 3rd degree burn

C. 3rd degree burn

Keratinocytes and Dendritic cells (Langerhans cells) are seen in A. stratum spinosum B. Stratum basale C. Stratum granulosum D. Stratum corneum

C. Stratum granulosum

A small scratch of the skin does not cause bleeding because the epidermis lacks___________. A. living cells B. hair follicles C. blood vessels D. melanin

C. blood vessels

Which of the following is the correct order of the layers of the cutaneous membrane? A. epidermis, hypodermis, dermis B. dermis, epidermis, hypodermis C. epidermis, dermis, hypodermis D. hypodermis, dermis, epidermis E. dermis, hypodermis, dermis

C. epidermis, dermis, hypodermis

11. What type of tissue is the epidermis composed of? A. adipose tissue B. connective tissue C. stratified squamous epithelial tissue D. transitional epithelial tissue

C. stratified squamous epithelial tissue

The pigment melanin A. is produced by cells called melanocytes and is found in higher concentration in individuals with darker skin. B. is usually some shade of red, yellow, or brown. C. protects DNA from the damaging effects of UV radiation. D. A and C only E. all of the above

D. A and C only E. all of the above

What kind of CT is the papillary layer made of? A. Areolar CT B. Dense irregular CT C. Dense regular CT D. Both A&C

D. Both A&C

Which of the following is NOT a part of the integumentary system? A. Hair B. Skin C. Nails D. Cartilage

D. Cartilage

The stratum lucidum A. Contains lamellar granules B. Lies just superficially to stratum basale C. Is the layer used in a skin graft D. Is present only in thick skin E. Consists of 25-30 layers of dead keratinocytes

D. Is present only in thick skin

Which of these is not a function of the skin? A. Maintaining temperature B. Producing vitamin D C. Eliminating waste D. Producing bile

D. Producing bile

Sebaceous glands secrete A. elastin B. Collagen C. Sweat D. Sebum

D. Sebum

What is the primary function of melanin? A. uptake of calcium from the diet D. determines skin color C. produces vitamin D D. produces sebum

D. determines skin color

A needle is injected into the skin. Identify the first integumentary structure through which the needle will pass. A. papillary layer B. dermis C. hypodermis D. epidermis

D. epidermis

A person has been burned by a pan of boiling water, he whole hand is red and is starting to blister. What layer (s) of skin have been affected? A. epidermis, dermis and hypodermis B. dermis only C. epidermis only D. epidermis and dermis

D. epidermis and dermis

In order for bacteria on the skin to cause an infection in the skin, they must A. survive the bactericidal components of sebum. B. avoid being flushed from the surface of the skin by sweat. C. penetrate the stratum corneum. D. escape the Langerhans' cells. E. all of the above

D. escape the Langerhans' cells.

The dark pigment in the skin is called__________________ A. keratin B. myosin C. collagen D. melanin

D. melanin

Mr. Morgan using a sharp knife notices a small amount of blood where he just cut himself. Which of the following layers of skin did he have to cut into to bleed? A. Stratum corneum B. Stratum basale C. Stratum lucidum D. Stratum granulosum D. papillary dermis

D. papillary dermis

Mr. Y spent too much time sun bathing. Not only is his skin painful to touch, but small blisters have appeared in the affected area. This indicates that he has damaged which layers of his skin? A. epidermis only B. dermis only C. Epidermis and hypodermis D. Hypodermis only E. Epidermis and dermis

E. Epidermis and dermis

What structure produces sebum that may cause acne? A. sweat gland B. hair follicle C. hair shaft D. arrector pili muscle E. sebaceous gland

E. sebaceous gland