BSCI 1511 Lecture Notes - Lecture 10: Scattering, Aspirin, Complement System
15 Jan 2018
School
Department
Course
Professor
Document Summary
2/9/17 action potentials: driving force = difference between e and membrane potential, action potentials: all or none, propagated along axon, 1-2 msec, one direction only (inactivation gates close behind potential) Invertebrates have uninsulated/non-myelinated axons: squids and earthworms have giant axons for rapid escape responses, small diameter axons conduct action potentials much more slowly. 2/10/17 - sensory systems (look @ olfactory and hearing in book) Inner = mitochondria, nucleus: outer = stack of membrane-bound discs densely packed with rhodopsin, captures photons, light causes rod to hyperpolarize. Muscles 2/15 and 2/17: types of muscle. Myosin head bound to atp low energy: 2. Myosin hydrolyses atp to adp+p, high-energy: 3. Myosin head binds actin, forms cross-bridge: 4. Myosin releases adp and p, returns to low energy conformation, slides actin: 5. In sr, low in t-tubules: ach released by synaptic terminal, diffuses across cleft and triggers ap propagated along t- tubules, ap releases ca++ from sr.
