PS101 Lecture Notes - Lecture 5: G1 Phase, Action Potential, Reuptake
Document Summary
Firing of neuron: resting potential, batter -70 milliavolts, negative charge, action potential, simulated, channels in membrane open, very charged sodium ions enter, shift in electrical charge, refractory period, channels close. All-or-none law: neuron either res or it doesn"t, intensity is conveyed by the rapidity of ring. Synapse- where neutrons meet: structures at synapse, axon terminal, synaptic vesicles, sacs, stores chemical change, neurotransmitters, transmit info between neutrons, synaptic cleft, gap. Tuesday, september 26, 2017: neurons don"t touch. Neurotransmitters: lock and key, reuptake or enzymatic degradation, acetylcholine between motor neurons and voluntary muscles, throughout nervous system, agonists excite- increase likelihood of ring, black widow, antagonists opposes- decreases likelihood of ring, curare. Monoamines- 3 neurontransmitters: dopamine excites and inhabits mood, movement, and reinforcement, norepinephrine a ects eating habits, alertness, and wakefulness. Nervous system: central nervous system, brain and spinal cord, peripheral nervous system. Tuesday, september 26, 2017: somatic nervous system, autonomic nervous system, sympathetic nervous system, parasympathetic nervous system.
