BIOL 031 Lecture Notes - Lecture 3: Phosphocreatine, Excitatory Postsynaptic Potential, Botulinum Toxin

• School: College of The Sequoias
• Department: Biology (BIOL)
• Course: BIOL 031
• Professor: Trimble

Document Summary

Metabotropic slow: neurotransmitter released has to react with gcpr system, can close and open ion channels (na+ and k+ channels) Shortly after a botox (botulinum toxin) injection, an action potential travels down the axon to the terminal. As a result of the injection, we expect that: the excitatory post-synaptic potential will be reduced. Rigormortis body stiffens, no atp to detach. Sliding filament: i band regions with actin but no myosin, h zone regions with myosin but no actin. Motor neurons from spinal cord attached to muscle fibers. Each motor unit consists of 1 motor neuron and all the fibers it innervates. Small motor unit each motor neuron will innervate fewer muscle fibers: large more muscle fibers. Muscle uses creatine phosphate as atp source: creatine phosphate can remove phosphate group for adp atp. Muscle cells use creatine phosphate, glycolysis, oxidative phosphorylation for atp. Citri acid cyle is post glycolysis if high proportion of cistinic dehydrogenase rely on citric acid cycle.