UNIT 5 REVIEWER 20 QUESTIONS

Synthesis of vitamin C

Which of the following functions is NOT associated with the integumentary system?

Spider-shaped epithelial cells situated in the deepest layer of the epidermis.

Which of the following describes melanocytes?

Cuticle

 It is believed to be the most heavily keratinized part of the hair, the ____ provides strength and helps keep the inner layers tightly compacted.

Vellus Hair & Terminal Hair

What are the types and growth of hair?

Stratum Spinosum

In this layer, several layers of keratinocytes are unified by desmosomes. Cells contain thick bundles of intermediate filaments made of pre-keratin.

Medulla

What is the central core, consisting of large cells and air spaces?

Protection

The fused bones of the skull protect the brain. The vertebrae surround the spinal cord, and the rib cage helps protect the vital organs of the thorax.

Melanin

What pigment gives the skin its color and helps protect it from UV radiation?

All of the above

What is the primary function of the integumentary system?

• Regulation of body temperature

• Protection against pathogens and UV radiation

• Sensation of touch, pressure, and pain

Causes sunburn and premature aging

How does UV radiation affect the skin?

Contraction to produce "goosebumps"

What is the purpose of the arrector pili muscles attached to hair follicles?

Ceruminous glands

It is the glands that is found inside the ears

Triglyceride (fat) Storage

A source of energy for the body that is stored in bone cavity

Carotene

 It is a YELLOW to ORANGE pigment found in certain plant products such as carrots.

Keratinocytes

The fibrous protein that helps give the epidermis its protective properties.

Cyanosis

What is the condition called when both the blood and the skin of Caucasians appear blue due to poorly oxygenated hemoglobin?

Melanocytes

Which specialized cells in the epidermis of the skin are responsible for producing melanin, a pigment that provides protection against UV radiation?

Tactile Cells

Cells that are present at the epidermal-dermal junctions. Shaped like a spiky hemisphere, each of these cells is intimately associated with a disc like sensory nerve ending.

 Burn

It is a tissue damage inflicted by intense heat,electricity, radiation, or certain chemicals.

Excretion

The body eliminates limited amounts of nitrogen–containing wastes (ammonia, urea, and uric acid) in sweat.