Ch 7 Flashcards
The medical branch of science that deals with the study of the skin, its functions, and diseases is \_\_\_\_\_. a. anatomy b. dermatology c. histology d. physiology
b. dermatology
About how many years of post-high school education and training are required to become a dermatologist? a. Two b. Four c. Eight d. Twelve
d. Twelve
The largest organ of the human body is the _____.
a. liver
b. lungs
c. skin
d. heart
c. skin
The average adult skin weighs _____ pounds.
a. 3 to 6
b. 6 to 9
c. 9 to 12
d. 12 to 15
b. 6 to 9
The surface of healthy skin is slightly _____.
a. yellow
b. alkaline
c. rough
d. acidic
d. acidic
Continued pressure on any part of the skin causes it to thicken and develop into a(n) _____.
a. lesion
b. appendage
c. scar
d. callus
d. callus
How does the skin of the scalp differ from other skin?
a. The scalp has larger and deeper hair follicles.
b. The scalp has no epidermis.
c. The scalp lacks sebaceous glands.
d. The dermis and the epidermis are reversed in the scalp.
a. The scalp has larger and deeper hair follicles.
The outermost and thinnest layer of the skin is the _____.
a. subcutaneous
b. surface
c. epidermis
d. dermis
c. epidermis
The epidermis has _____ layers.
a. three
b. five
c. seven
d. nine
b. five
The layer of skin that is seen and treated by the cosmetologist is the _____.
a. Stratum corneum
b. keratin
c. melanin
d. Stratum spinosum
a. Stratum corneum
What is a fibrous protein that is the principal component of hair and nails?
a. Keratin
b. Elastin
c. Dermal papillae
d. Collagen
a. Keratin
The skin layer in which the shedding of skin cells first begins is the stratum _____.
a. lucidum
b. corneum
c. spinosum
d. granulosum
c. spinosum
The deepest layer of the epidermis, the basal cell layer, is also known as the _____.
a. stratum spinosum
b. stratum germinativum
c. stratum corneum
d. keratin dermis
b. stratum germinativum
The stratum germinativum is composed of several layers with special cells that produce a dark skin pigment called \_\_\_\_\_. a. keratin b. elastin c. melanin d. granules
c. melanin
What is the name of the special cell in the stratum germinativum, responsible for producing dark skin pigment? a. Papules b. Melanocytes c. Sensory nerve fibers d. Dermal papillae
b. Melanocytes
The underlying or inner layer of the skin, which is also called the derma corium, cutis, or true skin, is the \_\_\_\_\_. a. papillary b. dermal c. dermis d. epidermis
c. dermis
The highly sensitive dermis layer is about _____ times thicker than the epidermis.
a. 10
b. 15
c. 20
d. 25
d. 25
The muscle that causes goose bumps when a person is frightened or cold is the _____.
a. angled muscle
b. secretory muscle
c. absorption muscle
d. arrector pili muscle
d. arrector pili muscle
The outermost layer of the dermis is the _____ layer.
a. papillary
b. dermal
c. tactile
d. reticular
a. papillary
Small, cone-shaped elevations at the bottom of hair follicles are known as _____.
a. papules
b. melanocytes
c. sensory nerve fibers
d. dermal papillae
d. dermal papillae
The top of the papillary layer where it joins the epidermis is the _____.
a. dermis corpuscles
b. epidermal–dermal junction
c. epidermal–dermal connection
d. epidermis junction
b. epidermal–dermal junction
The deeper layer of the dermis that supplies the skin with oxygen and nutrients is the _____.
a. papillary layer
b. subcutaneous layer
c. reticular layer
d. basal layer
c. reticular layer
Fatty tissue found below the dermis is called _____.
a. tactile
b. papillae
c. subcutaneous tissue
d. papillary layer
c. subcutaneous tissue
Which type of nerve fibers carry impulses from the brain to the muscles?
a. Sensory
b. Motor
c. Secretory
d. Central
b. Motor
Which body part sends messages to the brain?
a. Papules
b. Melanocytes
c. Sensory nerve fibers
d. Dermal papillae
c. Sensory nerve fibers
What layer of the dermis houses the nerve endings that provide the body with the sense of touch?
a. Secretory layer
b. Papillary layer
c. Dermal layer
d. Reticular layer
b. Papillary layer
The tiny grains of pigment deposited in cells that provide skin with its color are _____.
a. protein
b. keratin
c. melanin
d. collagen
c. melanin
The melanin produced by the body that is red to yellow in color is _____.
a. granular melanin
b. pheomelanin
c. eumelanin
d. photovoltaic
b. pheomelanin
_____ helps protect sensitive cells from UV rays.
a. Melanin
b. Sebum
c. Keratin
d. Elastin
a. Melanin
What is a fibrous protein that gives skin form and strength?
a. Keratin
b. Papule
c. Dermal papillae
d. Collagen
d. Collagen
The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded is _____.
a. protein
b. collagen
c. elastin
d. keratin
c. elastin
Oil glands that are connected to hair follicles are also called _____.
a. sudoriferous glands
b. sebaceous glands
c. arrector glands
d. substance glands
b. sebaceous glands
When sebum hardens and the sebaceous duct becomes clogged, the pore impaction that is formed is a _____.
a. secretory coil
b. lubricant
c. scar
d. comedo
d. comedo
What is a small, round elevation on the skin that contains no fluid but may develop pus?
a. Keratin
b. Papule
c. Dermal papillae
d. Collagen
b. Papule
Water is the number one nutrient of the body and composes what percentage of the body’s weight?
a. 10 to 30 percent
b. 30 to 50 percent
c. 50 to 70 percent
d. 70 to 90 percent
c. 50 to 70 percent
Vitamin _____ may help improve the skin’s elasticity and thickness.
a. C
b. B
c. A
d. D
c. A
Vitamin _____ promotes the production of collagen.
a. A
b. C
c. B
d. D
b. C
Which vitamin enables the body to properly absorb and use calcium?
a. A
b. C
c. D
d. E
c. D
