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consist of skin, hair, nails, and various glands
Integumentary System
scientific name for skin
cutaneous membrane
consist of epithelial tissues
cutaneous membrane
3 layers of skin
Epidermis
,
dermis
,
hypodermis
scientific name for hypodermis
subcutaneous layer
superficial; made of epithelial tissues
Epidermis
made of underlying connective tissue
dermis
made of adipous tissue
Hypodermis
accessory structures:
hair
nails
Multicellular exocrine glands
gland that produces sweat
sweat glands
gland that produces earwax
ceruminous glands
gland that produces sebum
sebaceous glands
GENERAL FUNCTIONS:
Protection
Temperature maintenance
Synthesis and storage of nutrients
Sensory reception
Excretion and secretion
Production of keratin and melanin
skin covers underlying tissues preventing fluid loss
protection
skin regulates heat exchange
temperature maintenance
epidermis synthesizes vit. D; dermis stores lipids
Synthesis
and
storage of nutrients
receptors for pain, pressure, touch
sensory reception
glands excrete salts, water, and waste; mammals secrete water
excretion
and
secretion
outermost
skin layer

epidermis
top sub layer of epidermis
stratum corneum
bottom sub layer of epidermis
stratum germinativum
Stratified
Squamous Epithelium
thick skin has how many layers
5 layers
thin skin has how many layers
4 layers
what are the layers called
strata
structure of epidermis:
stratum basale
stratum spinosum
stratum granulosum
stratum lucidum
forms epidermal ridges; avascular; contains germinative cells
stratum basale
what is the other term for stratum basale
stratum germinativum
where is the stratum basale attached
hemidesmosones
contours
of skin follows
epithelial ridge patterns
what produces pigment
melanin
the cell that produces melanin
melanocytes
skin cancer that affects the melanocytes
melanoma
receptors in specialized cells
merkel cells
consist of keratinocytes; 5-10 layers of skin
stratum spinosum
where is stratum spinosum connected
desmosomes
what word did stratum spinosum came from
spine
what are langerhan cells in the stratum spinosum that engulfs pathogens
dendrindic cells
contains granules of keratin; connected by desmosomes
stratum granulosum
stratum granulosum is filled with ____
keratohyalin
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