ANP 1105 Lecture Notes - Lecture 2: Enzyme, Extracellular Fluid, Glycocalyx

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Joanne Savory

Document Summary

Anatomy & physiology: lecture 2 the neuron. Plasma membrane: the outer boundary of the cell which acts as a selectively permeable membrane. Structure: consists of two parallel sheets of phospholipid molecules lying tail to tail, with their polar heads bathed in water on either side of the membrane or organelle. The fluid mosaic model: a depiction of the plasma membrane as an exceedingly thin structure composed of a double layer, or bilayer, of lipid molecules with protein molecules dispersed in it. Mechanical barrier: separates two of the body"s fluid compartments. Selectively permeable: determines manner in which substances enter and exit the cell. Electrochemical gradient: generates and helps to maintain electrochemical gradient required for muscle and neuron function. Communication: allows cell-cell recognition (sperm to egg) and interaction. Cell signaling: plasma membrane proteins interact with specific chemical messengers and relay messages to the cell interior.