Chapter 4 Integumary System Flashcards
membrane
a thin sheet like structure that may have important functions in the body
appendages
something that is attached
cutaneous membrane
the primary organ of the integumentary system
serous membrane
a 2 layered epithelial membrane that lines the body cavities and covers the surface of organs
integument
refers to the skin
basement membrane
the connective tissue layer of the serous membrane that holdsand supports the epithelial cells
parietal portion
the part of the serous membrane that lines the walls of a body cavity
visceral portion
the part of the serous membrane that covers the surface of organs in the body cavities
pleura
the serous membranes in the thoracic cavities
peritonium
the serous membranes in the abdominal cavities
Pleurisy
a painful pathological condition characerized by inflammation of the serous membranes (pleura) tha tline the chest cavity and cover the lungs
mucous membrane
epithelial membranes that line body surfaces opening directly to the exterior
mococutaneous junction
the transitional area that serves a a point of “fusion” where skin and mucous membranes meet
synovial membrane
line the spaces between bones and joints that move are classified as connective tissue membranes
synovial fluid
helps reduce friction between the opposing surfaces of bones in moveable joints
bursae
small , cushionlike sacs found between moving body parts
sebaceous glands
oil glands
epidermis
the outermost layer of the skin
dermis
the deeper layer of the skin
Hypodermis or subcutaneous tissue
a thick layer of loose connective tissue and fat
stratum germinativum
the cells of the innermost layer of skin
keratin
a tough, waterproof material that provides cells in the outer layer of the skin with a horny, abrasion-resistant, and protective quality
stratum corneum
the tough outer layer of the epidermis
pigment
a substance that gives color to the skin
Melanin
the brown pigment
cyanosis
when oxygen levels decrease ofr if actual blood flow is reduced dramatically, the skin turns a bluish-gray color
dermal papillae
parallel rows of peg-like projections
follicles
specialized structures required for hair grown
lanugo
the hair of a newborn infant
hair papilla
a small cap-shaped structure of cells
root
the part of the hair hidden in the follicle
shaft
the visible part of the hair
arrector pilli
a smooth involuntary muscle attached to the base of a dermal papilla attached tothe base of a follicle
Meisserner’s corpuscle
is located close to the skin surface, it detects sensations of light touch
Pacinian corpuscle
is located deep in the dermis; it is capable of locating pressure on the skin surface
sudoriferous gland
sweat glands
Eccrine sweat glands
more numerous, and widespread sweat glands. They make perspiration
Apocrine sweat glands
they secrete thicker secretion
Sebum
prevents drying and cracking of the skin
keratin
protects the body from excessive fluid loss
