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Created with Fabric.js 1.4.5 Levels of Organization & Transport Terms: Superior-towards the headInferior-away from the headAnterior-toward the front of the bodyPosterior-toward the backside of the bodyMedial-toward the midline of the bodyLateral-away from the midline of the bodyIntermediate-between a more medial and a more lateral structureProximal-close to the origin of the body partDistal-farther from the origin of a body partSuperficial-toward or at the body surfaceDeep-away from the body surface Levels of Organization: Cells-> Tissues-> Organ-> Organ Systems-> Organism Function: To maintain a state of body equilibrium or stable internal environment in the body Transport Mechanisims: Say What? Various levels of organization, forms of histology, and types of transport are found throughout the whole body! Negative feedback loop- feedback that causes the stimulus to decline or endEx:infection, wrong PHPositive feedback loop-tends to cause a variable change in the same direction as the initial change; enhances the stimulusEx:birth, blood clots Osmosis-diffusion of water through selective permeable membranesActive Transport-when a cell moves molecules from a lower to higher concentration using energy ex:phagocytosis and pinocytosisPassive Transport-ions and molecules move from a high to low concentration without needing any energy input from the cellDiffusion-the process by which molecules tend to scatter themselves through the available space Homeostasis: A state of body equilibrium or stable internal environment of the body Totipotent Cells-capable of dividing and developing to form a complete Pluripotent cell (capable of developing into many different cell types)Pluripotent stem cells can alleviate damage to organs and are useful in regenerative medicine. Stem Cells:
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