ANP 1105 Lecture Notes - Lecture 7: Oligodendrocyte, Schwann Cell, Synapsis

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jackie Carnegie

Document Summary

Topic 2: cellular physiology of nerve and muscle (part 1) Phospholipid: glycerol, fatty acids and phosphate (aq) group. Very fluid, made up of many parts. Nb: glycocalyx changes when cell becomes cancerous - can even change repeatedly to avoid recognition by immune system: cholesterol: overall: reduces general membrane uidity & stabilizes its structure too much cholesterol causes membranes to lose exibility. Tight junctions (left) plasma membranes to prevent passage of molecules fused together tract b/c keeps acid in stomach. Important in digestive instead of damaging epithelia cells. Anchoring junctions: molecular linking of cells to resist mechanical stress. Found in places were strong attachment is need, like lining of stomach. Molecular channels between cells to allow passage of cytoplasm molecules. Ions from one cell to another (open channels) Even distribution of molecules or ions throughout environment. Effective barrier between intracellular and extracellular fluids. Interstitial fluid a filtrate of blood (nutrients, hormones, gasses) Maintain homeostasis and function normally need to keep, discard.