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24 Cards in this Set
- Front
- Back
Tissue
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an aggregation of cells performing a similar function
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Histology
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the study of microscopic structure of tissues
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4 Primary Tissue Types
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1. Epithelial 2. Connective 3. Muscular 4. Nervous |
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Epithelial Tissue
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lines cavities (lumen), covers surfaces, forms glands, always has a free surface
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Connective Tissue
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Protects and connects other tissues, transport system, primary energy reserve
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Muscle Tissue
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responsible for movement, produces heat
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Nervous Tissue
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generates and detects action potentials (nerve impulses)
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Intracellular Fluid (ICF)
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Fluid within cells
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Extracellular Fluid (ECF)
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Fluid outside body cells *consists of ISF and Plasma |
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Interstitial Fluid (ISF)
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ECF that fills narrow spaces between cells of tissues |
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Plasma
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liquid portion of blood
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Fluid Mosaic Model
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continually moving sea of fluid lipids that contains a mosaic of many different proteins
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Plasma Membrane
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a flexible yet sturdy barrier that surrounds and contains the cytoplasm
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Phospholipid Bilayer
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two back to back layers made up of three types of lipid molecules: phospholipids, cholesterol, and glycolipids
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selective permeability
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permits some substance to pass more readily than others
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Active Process
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substance moving against its gradient
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Passive Process
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substance moving down its gradient
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Solute
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MINOR (dissolved in solvent) ex: salt |
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Solvent
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MAJOR (dissolves the solute) ex: water |
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Diffusion
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net movement of solutes from a region of greater concentration to a region of to a region of lesser concentration (moving down a concentration gradient - passive transport)
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Osmosis
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specialized form of diffusion, diffusion of solvent across a selectively permeable membrane in response to differences in solute concentrations, movement from high solvent concentration to low solvent concentration, passive process
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Identify 2 cell types of Nervous Tissue
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1. Neuroglia 2. Neurons |
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Identify Specific Features of a Neuron
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1. Axons 2. Dendrites 3. Soma |
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Cellularity
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Cells packed together in an orderly fashion with little extracellular matrix
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