Anatomy unit test

What is a nail? A. A scale like modification of the epidermis B. A clear protective covering on the palmar surface of the finger C. A scale like modification of the dermis D. A structure made of soft keratin just like skin

A

What is the function of keratinocytes A. Produce a tough fibrous protein that gives the epidermis its protective qualities B. Present antigens to killer T lymphocytes C. Responsible for skin pigmentation D. Sensory receptor for touch

A

The reticular layer is composed of what type of tissue? A. Adipose B. Dense regular connective C. Dense irregular connective tissue D. Nerve tissue E. Keratinized stratified squamous epithelial tissue

C

What is the difference between belly's and terminal hair? A. Vellus hair is darker B. Terminal hair is usually found on the body of children and adult females C. Terminal hair is coarser and longer, usually found on the scalp and eyebrows D. At puberty vellus hair appears in the axillary and pubic regions

C

What is the function of melanocytes A. Produce a tough fibrous protein that gives the epidermis its protective qualities B. Present antigens to killer T lymphocytes C. Protect against harmful UV radiation D. Senses touch

C

What property do collagen fibers impart to skin? A. Waterproofing B. Stretch-recoil C. Strength and resiliency D. Elasticity

C

Which of the following best describes the dermis A. Most superficial layer of the skin B. Made up of keratinocytes C. Made up of strong, flexible connective tissue D. Has three distinct layers

C

Which of the following is NOT an example of how the integumentary system functions in protection? A. Skin secretions such as acid mantel that prevents multiplication of bacteria B. A physical barrier provided by the hardness of the epidermis keratinized cells C. RNA acts to shield the sun from harmful UV rays D. Langerhans cells that act to initiate the immune system response

C

Which of the following is NOT true of melanoma? A. It is the most deadly form of skin cancer B. It arises from melanocytes in the epidermis C. It is easily treated and therefore, the least deadly form of skin cancer D. Resistant to chemotherapy E. It must be found early or chance of survival is poor

C

Which of the following is not a function of the integumentary system? A. Protection B. Synthesis of vitamin D C. Provides a frame work for muscles to use D. Site of cutaneous regulation E. Body temp

C

Which of the following structures do NOT make up the major regions of the hair shaft? A. Medulla B. Cortex C. Hair follicle D. Cuticle

C

Which of the following tissue is found in epidermis A, B, C, D, E

C

Why is the synthesis of vitamin D so important to the body? A. It provides the body with soft skin B. It triggers the release of potassium into the bloodstream which keeps bones strong C. It allows for calcium absorption to occur which keeps bones strong D. It increases melanocyte activity and therefore increases our natural sunscreen

C

Which of the following is true of basal cell carcinoma? A. Arises from keratinocytes in the epidermis B. Arises from melanocytes in the epidermis C. Arises in the deepest layer of the epidermis and proliferates into the dermis and hypodermis D. Is the least dangerous skin cancer

C, D

Which of the following statements is true regarding hair growth and thinning? A. Fine, pale, terminal hair is common in children and women B. Terminal hair appears in the axillary and pubic regions of both sexes during puberty C. Hair thinning and some degree of baldness results when the active growth phase of the follicle growth cycle slows D. Hair growth and density are influenced by nutrition and hormones

C, D

Which of the following is NOT a function of the integumentary system? A. Keeps us warm B. Senses insects on the skin before they bite C. Shields the eyes D. Guards against physical trauma E. Guess against sunlight and heat loss F. Initiates sweat glands

F

A blister forms when fluid gets trapped between which two layers of skin? A. Epidermis and dermis B. Dermis and Hypodermis C. Papillary and reticular D. Papillary and hypodermis

A

Peg-like structures that are responsible for creating your fingerprint pattern are called A. Dermal papillae B. Epidermal ridges C. Flexure lines D. Striae

A

What are striae? A. Silvery-white scars due to stretched skin B. Blisters C. Creases to allow for joint movement D. Flexure lines

A

Which integumentary system gland is correctly paired with its secretion? A. Apocrine sudoriferous- components of sweat plus fatty substances and proteins B. Eccrine sudoriferous- sebum C. Ceruminous- sweat D. Sebaceous- milk

A

Which of the following is true of squamous cell carcinoma? A. Arises from keratinocytes in the epidermis B. Arises from melanocytes in the epidermis C. Most dangerous skin cancer D. Can quickly spread into the dermis and hypodermis

A

The hypodermis is composed of which TWO of the following tissues? A B C D E

A, B

The hypodermis is composed of which TWO of the following tissues? A. Adipose B. Dense regular connective C. Dense irregular connective tissue D. Nerve tissue E. Keratinized stratified squamous epithelial tissue

A, D

Which of the following statements regarding melanin is true? A. Freckles and pigmented moles are local accumulations of melanin B. Visible darkening of skin results from increased melanin production C. OC1, oculocutaneous type 1 albinism, results from a mutation in the tyrosinase gene D. Melanin production is signaled by a faster rate of repair of DNA damaged by UV radiation

A-D

Changes in the color of skin are often an indication of homeostatic imbalance, which of the following changes would suggest a patient is suffering from lack of oxygen? A. Black and blue marks become evident for no apparent cause B. The skin, and/or mucous membranes, and mail beds appear blue C. The skin appears to have an abnormal, yellowish tint D. The skin goes pale

B

Deep skin creases that accommodate joint movement called? A. Striae B. Flexure lines C. Cleavage lines D. Blisters

B

How does the integumentary system regulate body temperature when the body becomes overheated? A. Blood vessels constrict and sweat glands are stimulated B. Blood vessels dilate and sweat glands are stimulated C. Sweat glands are stimulated by the decrease in blood flow to the skin D. Heat is released through the secretion of sebaceous gland

B

What are the two layers of the dermis? A. Papillary, Areolar B. Papillary, reticular C. Reticular, Areolar D. Dermal papillae, Reticular

B

What is the function of langerhans' cells A. Produce a tough fibrous protein that gives the epidermis its protective qualities B. Present antigens to killer T lymphocytes C. Protect against harmful UV radiation D. Senses touch

B

What is the function of the epidermal ridges? A. Make your fingerprints B. Increase friction and enhance gripping ability C. Releases sweat through pores D. Allows for sensation

B

What is the immediate threat to life resulting from severe burns? A. Infection B. Dehydration C. Loss of tissue D. Loss of tissue repair

B

What property do elastin fibers impart to skin? A. Waterproofing B. Stretch-recoil C. Strength D. Resiliency and support

B

Which integumentary system glands are correctly paired with their primary location on the body? A. Apocrine sudoriferous- all over the body except palms and soles of feet B. Eccrine sudoriferous- abundant on palms, soles of feet, and forehead C. Ceruminous- axillary, anal, and genital regions D. Sebaceous- line external ear

B

Which of the following is NOT a function of hypodermis? A. Stores fat B. Synthesizes vitamin D C. Insulation D. Anchors skin to underlying tissues E. Acts as a shock absorber

B

Which of the following is subcutaneous? A. Dermis B. Hypodermis C. Epidermis

B

Which of the tissues is found in the papillary layer of the dermis A B C D E

B

Which pigments is correctly paired with color it contributes to skin? A. Carotene- yellow to brown B. Hemoglobin- pink C. Melanin- orange

B

Which type of burn is most painful and results in blistering? A. First B. Second C. Third D. Fourth

B

The papillary layer is made up what type of tissue? A. Adipose B. Dense regular connective C. Dense irregular connective tissue D. Nerve tissue E. Keratinized stratified squamous epithelial tissue

D

What is the function of the tactile (Merkel) cells A. Produce a tough fibrous protein that gives the epidermis its protective qualities B. Present antigens to killer T lymphocytes C. Protect against harmful UV radiation D. Senses touch

D

Which integumentary system gland is correctly paired with its function? A. Apocrine sudoriferous- deters insects and blocks foreign material B. Eccrine sudoriferous- not known; possible equivalent of sexual scent gland C. Ceruminous- nourishes offspring D. Sebaceous- softens and lubricates hair and skin; slows water loss from skin

D

Which of the tissues is found in the reticular layer of the dermis A B C D E

D

The epidermis is composed of what type of tissue A. Adipose B. Dense regular connective C. Dense irregular connective tissue D. Nerve tissue E. Keratinized stratified squamous epithelial tissue

E

Which of the following is NOT an accessory structure/appendage of the skin A. Sweat glands B. Oil glands C. Hair D. Nails E. Nerves

E

Which of the following tissues is smooth muscle A B C D E

E