Chapter 7 Skin Structure, Nutrition and Growth Flashcards
The branch of science that deals with the study of the skin is:
a. physiology
b. dermatology c. anatomy d. histology
dermatology
The largest organ of the human body is the:
a. heart
b. brain c. liver d. skin
skin
Continued pressure on any part of the skin causes it to thicken and develop into a(n):
a. callus
b. appendage c. papule d. scar
callus
The thinnest skin is found on the:
a. nose
b. fingertips c. eyelids d. lips
eyelids
The outermost layer of skin that forms the protective covering of the body is the:
a. dermis
b. surface c. subcutaneous d. epidermis
epidermis
What is the deepest layer of the epidermis?
a. stratum lucidum
b. stratum germinativum c. stratum spinosum d. stratum corneum
stratum germinativum
The clear, transparent layer of the epidermis consisting of small cells through which light can pass is the:
a. stratum granulosum
b. stratum corneum c. stratum lucidum d. stratum spinosum
stratum lucidium
The special cells that produce dark skin pigment are called:
a. elastins
b. secretory coils c. tactile corpuscles d. melanocytes
melanocytes
The layer of skin that we see is the:
a. stratum spinosum
b. dermis c. stratum corneum d. stratum lucidum
stratum corneum
The fibrous protein that is the principal component of hair and nails is called:
a. melanin
b. sebum c. collagen d. keratin
keratin
The _____ is the underlying or inner layer of the skin.
a. epidermis
b. adipose c. arrector pili d. dermis
dermis
The ______ supplies the skin with oxygen and nutrients?
a. basal cell layer
b. subcutaneous tissue c. papillary layer d. reticular layer
reticular layer
The top of the papillary layer where the two layers of skin join is known as the:
a. epidermal link
b. epidermal-dermal junction c. dermal-epidermal junction d. dermal link
epidermal-dermal junction
The arrector pili muscle:
a. All answers are correct.
b. is a very small muscle c. is an involuntary muscle d. causes goose bumps when a person is cold or frightened
all of these answers are correct
Which layer of the dermis houses the nerve endings that are sensitive to touch and pressure?
a. reticular layer
b. papillary layer c. subcutaneous layer d. stratum corneum
papillary layer
The melanin produced by the body that is red to yellow in color is called:
a. photomelanin
b. pheomelanin c. polymelanin d. eumelanin
pheomelanin
Which of the following is a fibrous protein that gives the skin form and strength?
a. melanin
b. collagen c. elastin d. keratin
collagen
Which of the following gives skin its flexibility and helps skin regain its shape after being expanded?
a. keratin
b. collagen c. melanin d. elastin
elastin
When sebum hardens and the sebaceous duct becomes clogged, it forms a pore impaction called a:
a. comedo
b. melanocyte c. tactile corpuscle d. scar
comedo
Water composes ______ of body weight.
a. 70 to 90 percent
b. 30 to 50 percent c. 20 to 30 percent d. 50 to 70 percent
50 to 70 percent
The _____ nerve fibers react to heat, cold, touch, pressure, and pain.
a. biogen
b. motor c. sensory d. secretory
sensory
The sudoriferous glands:
a. All answers are correct.
b. detoxify the body c. excrete perspiration d. are also known as sweat glands
all answers are correct
Which of the following is NOT a function of the skin?
a. absorption
b. digestion c. protection d. excretion
digestion
To maintain a balanced diet, the USDA recommends that you:
a. avoid foods low in saturated fat
b. drink as much water as possible every day c. drink alcoholic beverages on a regular basis d. eat a variety of foods
eat a variety of foods
