BIOL 1051H Lecture Notes - Lecture 7: Multipolar Neuron, Peripheral Nervous System, Autonomic Nervous System
Document Summary
Nerves, ganglia, and nerve plexuses (outside of the cns) Neuron that transmits impulses from a sensory receptor into the cns. Neuron that transmits from the cns to an effector, for example a muscle. Cable-like collection of many axons in the pns; may be mixed (contain both sensory and motor fibers) Nerve that stimulates contraction (or inhibits contraction) of smooth muscle and cardiac muscle and that stimulates glandular secretion. Grouping of neuron cell bodies located outside the cns. Grouping of neuron cell bodies within the cns. Grouping of axons that interconnect regions of the cns. 70mv high concentration of k inside the cell. Na channels open na enters cell k channels beginning to open. Na channels closed k channels fully open k leaves cell. Chemical synpases: more common, release chemical at terminal bouton (end axon: action potential reach axon terminals, voltage-gated ca channels open, ca binds to sensor protein in cytoplasm, ca protein complex stimulates fusion and exocytosis of neurotransmitters.
