Physiology 1021 Lecture Notes - Membrane Protein, Glycoprotein, Autocrine Signalling

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Anita Woods

Document Summary

Is selective for different ions and molecules essentially controls what gets into the cells. Cholesterols are fat, hydrophobic, hangs out in the hydrophobic core. Trans-membrane protein passes through one side of the cell membrane to the other. Carbohydrates are also associated with the cell membrane, can be physically attached to a protein, called glycoprotein when attached. Glycoproteins are found on the side of the membrane that faces outside of the cell. When carbohydrate is attached to a lipid, its called a glycolipid, instead of a phosphate head it has a carbohydrate head. Long-distance communication is essential for the maintenance of homeostasis. They maintain these functions by using both chemicals and electrical means of communication. Chemical signal released by a neuron onto a target cell rapid effect. Affect only cells with receptors for that chemical. Affect only cells with receptors for the chemical. Hormonal transmission is slower than nervous transmission. Chemical signal made by a neuron and secreted into the bloodstream.