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66 terms

integumentary system

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cutic
skin (subcutaneous)
derma
skin (dermis)
epi
over, above
folli
bag
kerat
horn
melan
black
seb
grease
cyan
dark blue
sudor
sweat
Stratum Basale
the man mitotic nuclei seen in this layer reflect the rapid division of cells
Stratum Spinosum
"prickly layer" or the epidermis
Stratum Granulosum
where keratinocytes begin to flatten and their nuclei and organelles begin to disintegrate
Stratum Lucidum
"Clear Layer" of the epidermis
Stratum Corneum
"horny layer" of the epidermis
Epidermis
where the major portions of hair follicles as well as oil and sweat glands are derived from
necrosis
prolonged pressure causes blood flow to the skin to stop, which eventually leads to the breaking down of the tissue
Dermal Papillae
peg-like projections on the superior surface that indent the overlying epidermis
Epidermal Ridges
finger prints
Papillary
thin superficial layer of areolar CT in which the collagen and elastic fibers are heavily invested with blood vessels
Reticular
consists of dense irregular CT containing collagen and elastic fibers, adipose cells, hair follicles, nerves, and sebaceous and sudoriferous glands
Homeostatic imbalance
short term but acute trauma can cause a blister
Melanin, Carotene, and hemoglobin
3 pigments that influence skin color
melanin
yellow-red pigment
Nevus
a benign localized overgrowth of melanocytes
vitilago
a condition in which there is a partial or complete loss of melanocytes from patches of skin
Carotene
pigment found in the stratum corneum, dermis, and subcutaneous layer
Hemoglobin
located in erythrocytes flowing through dermal capillaries
Erythrocytes
contain hemoglobin, flow through dermal capillaries
protection, insulation, and sensory
3 functions of hair
medulla, cortex, and cuticle
concentric layers of hair, deep to superficial
trichosiderin
Iron containing pigment that turns hair red
Hair bulb
the deep, expanded end of the hair follicle
Hair follicle receptor
a knot of sensory nerve ending that wraps around each hair bulb
Hair papilla
nipple-like bit of dermal tissue that protrudes into the hair bulb
Vellus and terminal
2 types of hair
Anagen, Catagen, and Telogen
3 growth cycles of hair
Alopecia
baldness
proteins
appears to be under control of the the lifespan of hair
Sudoriferous
type of gland all over the body except for the nipples and parts of the external genitalia
Eccrine or Merocrine
most numerous sweat gland, very abundant on the palms, soles, and forehead
Dermicidin
microbe killer
Apocrine
gland common only in axillary and anogenitary areas
Ceruminous
gland found in the lining of the external ear
Sebaceous
gland found all over the body except palms and soles
Sebum
has bactericidal actions
Chemical, Physical/Mechanical, and Biological
3 types of protection provided by the integumentary system
melanin (prevents UV damage)
one chemical barrier for protection supplied integumentary system
glycolipids block the diffusion of water in and out of the body
one physical/mechanical barrier for protection supplied by the integumentary system
Langerhans' cells (immunity agent)
one biological barrier for protection supplied by the integumentary system
Protection, Body Temperature Regulation, Cutaneous Sensation, Metabolic Functions, Blood Resevoir, and Excretion
6 Functions of the integumentary system
Hypodermis
Body temperature regulation of the integumentary system
Merkel Cells
Cutaneous Sensation of the integumentary system
sunlight converts cholesterol in dermal blood vessels to a vitamin D precursor
Metabolic function of the integumentary system
Vitamin D
used by the digestive tract in order to absorb calcium
Papillary level of the dermis
Blood reservoir in the integumentary system
Sweating
Excretion in the integumentary system
Cancer
a logical, coordinated process in which a precise sequence of tiny alterations changes a normal cell into a killer
neoplasm
formed when cells fail to honor normal controls of cell division and multiply excessively
malignant cells
resemble immature cells and invade their surroundings rather than pushing them aside
metastasis
the capability of malignant cells to travel
Biopsy
removing a tissue sample surgically and examining it microscopically for malignant cells
Melanoma
most dangerous skin cancer because it is highly metastatic and resistant to chemotherapy
Asymmetry, Border irregularity, Color, and Diameter
ABCD rule stands for this
First-Degree
burn in which symptoms are localized redness, swelling and pain
Second-Degree
burn in which symptoms are localized redness, swelling, pain, and blisters
Third-Degree
burn in which symptoms are burned area appears grey, red, or black