NR 283 Quiz 2 Review.Final Test Paper 2026\2027.
Functions of the skin
protection, prevents penetration, perception, temperature
regulation, identification, wound repair, absorption and
excretion, production of vitamin D
Epidermis
Outer layer of skin
-no blood vessels or nerves
Keratinocytes
barrier for pathogens
Langerhan
type 4 hypersensitivity
Melanocytes
produce melanin
Merkel
nerve endings
Dermis
middle layer of skin
-connective tissue layer
-blood,lymph,nerves
macrophages
, NR 283 Quiz 2 Review.Final Test Paper 2026\2027.
Found within the lymph nodes, they are phagocytes that
destroy bacteria, cancer cells, and other foreign matter in the
lymphatic stream.
mast cell
immune cells that function to detect foreign substances in
tissue spaces and initiate an inflammatory response
histiocytes
Macrophages in connective tissue
apocrine sweat glands
body odor
eccrine sweat glands
stress/ fear
arrector pili
a smooth muscle attached to hair follicles that causes "goose
bumps" to appear on the skin when contracted
Dermis: Sebaceous Glands
keep hair moist
secrete sebum
stimulated by androgens
Hypodermis
loose connective tissue layer of skin below the dermis
What happens to the skin as we age?
skin thins
less sweat glands
Functions of the skin
protection, prevents penetration, perception, temperature
regulation, identification, wound repair, absorption and
excretion, production of vitamin D
Epidermis
Outer layer of skin
-no blood vessels or nerves
Keratinocytes
barrier for pathogens
Langerhan
type 4 hypersensitivity
Melanocytes
produce melanin
Merkel
nerve endings
Dermis
middle layer of skin
-connective tissue layer
-blood,lymph,nerves
macrophages
, NR 283 Quiz 2 Review.Final Test Paper 2026\2027.
Found within the lymph nodes, they are phagocytes that
destroy bacteria, cancer cells, and other foreign matter in the
lymphatic stream.
mast cell
immune cells that function to detect foreign substances in
tissue spaces and initiate an inflammatory response
histiocytes
Macrophages in connective tissue
apocrine sweat glands
body odor
eccrine sweat glands
stress/ fear
arrector pili
a smooth muscle attached to hair follicles that causes "goose
bumps" to appear on the skin when contracted
Dermis: Sebaceous Glands
keep hair moist
secrete sebum
stimulated by androgens
Hypodermis
loose connective tissue layer of skin below the dermis
What happens to the skin as we age?
skin thins
less sweat glands
