BIOL1040 Lecture Notes - Lecture 1: Information Processing, Oligodendrocyte, Sensory Neuron
Document Summary
Module 2 lecture 1: neural transmission cells and ions (ch48) Cone snails: cone snails produce toxins that attack nervous system of prey (immobilise, neuropathic pain treatment drug based on cone snail toxins. Organisation of vertebrate nervous systems: vertebrates all have cns + pns with regional specialisation. Information processing: 3 stages of information processing, sensory input (eye, ear etc, motor output (pns) integration (cns) Reflex arc: neural pathway that controls action reflex, sensory neuron interneuron (spinal cord) motor neuron. Neuron structure: dendrites receive signals, cell body nucleus, axon hillock initiation of signals, axon signal transduction, synapse communication between two neurons. Types of neurons: sensory neurons, interneurons, motor neurons, sensory neurons dendrites joined to half of axon, then cell body, then rest of axon. Interneurons vary a lot (simple/common), lots of dendrites: motor neurons many dendrites attached to cell body, with long axon. Radial nerve: nerve that stimulates arm (baseball)
