BIO 1140 Lecture Notes - Lecture 11: Cortisol, Cytoskeleton, Lipid Bilayer
24 Aug 2016
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Document Summary
Conserved mechanisms essential for: development, hormonal regulation and homeostasis, immunity, physiology, cell growth, survival, cancer. Many different types of messages which affect the properties of the signal and how it can be relayed to the target cell. The target tissues for steroid hormones do not have receptors on the membrane surface for these hormones, because these hormones are soluble in the lipid bilayer. Peptides and proteins packaged in vesicles where they are not quite active vesicles are kept in a backed up area in the cell to wait for a signal. When the signal arrives, it triggers the vesicle to fuse with the membrane and release its contents by exocytosis calcium is the trigger carried on cytoskeletal; tracks to the membrane. Purines excellent for neuronal signalling and paracrine signalling. Gases short half-life able to use direct communication paths don"t rely on transporters gap junctions. Neural activity involves transmission of information via electrochemical events.
