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33 Cards in this Set
- Front
- Back
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Collections of Specialized cells and cell products that perform a limited number of functions
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Tissues
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Study of tissues
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Histology
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4 types of tissue
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1. epithelial
2. connective 3. muscle 4. neural |
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5 Epithelia characteristics
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1. bound closely together
2. Either exposed to environment or internal chamber 3. attached to basement membrane 4. No blood vessels 5. Continual replacement/regeneration |
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4 essential functions of epithelia
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1. provide protection
2. control permeability 3. provide sensation 4. produce specialized secretions |
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secretions are discharged onto surface
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exocrine
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secretions are released into tissue fluid or blood
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endocrine
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specialized transmembrane proteins that hold together epithelial plasma membranes
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cell adhesion molecules
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lipid layers of adjacent plasma membranes tightly bound together
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tight junction
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permits free diffusion of ions and small molecules
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gap junction
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attaches one cell to another
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spot desmosome
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attach cell to extracellular structures
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hemidesmosome
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these attach epithelial cells to rest of body
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basement membrane
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single layer of cells covering basement membrane
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simple epithelium
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several layers of cells above basement membrane
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stratified epithelium
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cells are thin and flat
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squamous epithelium
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hexagonal box shaped cells
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cuboidal
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tall, slender cells
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columnar
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This substance surrounds the cells
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matrix
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4 Functions of Connective Tissue
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1. support/protection
2. transportation 3. storage of energy 4. defense |
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3 types of muscle tissue
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1. skeletal
2. cardiac 3. smooth |
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Functions of Integumentary System
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Protection
Regulate House sensory receptors excrete waste synthesis immune response |
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4 accessory structures of integumentary system
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sweat glands
oil glands hairs nails |
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Site of fluid accumulation (blisters)
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Epidermis
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5 layers of Epidermis
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Stratum corneum
stratum lucidum stratum granulosum stratum spinosum stratum germinativum |
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not part of skin
anchors skin to underlying organs composed mostly of adipose tissue |
Hypodermis
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3 parts of hair anatomy
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Cuticle
Cortex Medulla |
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Does not spread
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Benign
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Moves to other parts of the body
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malignant
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Cancer Detection ABCs
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asymmetry
border irregularity color size (greater than 6mm) |
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4 Body Tissues
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Connective
Epithelium Muscular Nervous |
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Where are Epithelial Tissues Found?
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Body Coverings
Body Linings Glandular tissue |
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Functions of Epithelial Tissue
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Filtration
Absorption Secretion Protection |
