Kim Overview A & P
Terms
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- Anatomy
- Stdy of structure & shape of body & body parts
- Gross Anatomy vs. Microscopic
- What you can see with your eyes vs. what you need a microscope for: cells, tissues
- Physiology
- Study of how the body & its parts function Cells, organs, sytemic, patho
- Levels of structural organization: smallest to largest
- Atoms: C, O2, H, N Molecules: carbs, proteins, lipids, nucleic acids Organelles: mitochondria, etc. Cells: basic bldg block of all living things Tissues (histology):epithelial, muscular, connective, neural Organ: 2 or more tissues working together Organ system Organism A-M-O-C-T-O-O
- Homeostasis: Definition
- maintain relatively stable conditions internally regardless of external changes
- Homeostatic Mechanisms (autoregulations)
- Variable: process that needs regulation, ex. heat Receptor: sensor that recognizes the change in the variable Control Center: receptor sends info here: C.C. receives & processes need for change Effector: C.C. sends response via effector & effector causes change
- Homeostatic Feedback systems
- Negative: most use this Action that directly opposes the variation, ex: decrease in blood volume causes fluid retention & production of RBC's Positive Feedback: exaggerated response, exaggerates the variable, ex: blood clotting & oxytocin