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Steven Mendoza

physiology weeks 1-5

TermDefinition
What are 2 types of feedback to control homeostasis? Negative feedback negate variables by stabilizing and producing an action opposite of the change. Positive feedback stimulate or amplify the change (child birth).
What are 3 levels of control? Intracellular regulations within the cell, intrinsic (autoregulation) within tissues or organs, extrinsic organ to organ
What are the levels of protein structure? Primary- sequence of amino acids that make up a peptide chain. Secondary- polypeptides are coiled shaped like spirals. Tertiary- complex globular shape, quaternary highest level of organization.
Components of RNA? composed of ribose (sugar) , phosphate and nitrogen base (adenine, uracil, guanine, cytosine) can have temporary copies of DNA code .
What is diffusion? Molecules move through membranes from an area of higher concentration to lower concentration (gradient) diffusion is not possible when concentration is equal.
what is facilitated diffusion? A special diffusion where movement of molecules is made by transporters embedded in a cells membrane. Energy required comes from collision energy.
What are 2 types of cell metabolism? Catabolism breaks down large molecules into smaller ones releasing energy. Anabolism builds larger molecules with smaller ones this consumes energy.
What are the principle types of tissue? epithelial covers and protects the body surface, connective supports the body and its parts can transport substances, protects from invaders, muscles produces movement, nervous communication amongst various body.
Purpose of ECM extra cellular matrix? It’s the non-living material between cells, consists of water, proteins an collagen, helps hold tissues together and provides local communication with many cells.
What are the divisions of the skeleton? The axial skeleton made up of 154 bones of the head neck and torso (midline). The Appendicular skeleton made up of 126 bones from appendages that connect to the axial skeleton.
Created by: ryitdoza
 

 



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