HUMB1000 Lecture Notes - Lecture 22: Ganglion, Peripheral Nervous System, Central Nervous System

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24 Aug 2018
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Functions of the nervous system: maintaining homeostasis, receives sensory input, internal, external, integrating information, motor output, establish and maintain mental activity. Structural divisions of the nervous system: central nervous system (cns, brain and spinal chord, peripheral nervous system (pns, spinal nerves and cranial nerves. Compendium 8 - how do we control ourselves page 78. Basic structural unit of the nervous system: axon. Bundle of axons (nerve fibres) and their sheaths (outer covering: sensory receptors. Separate specialised cells which detect temperature, pain, touch, pressure, light, sound, odour, and stimuli: action potential. Electrical signal: effector organ or effector cell. The organ, tissue, or cell in which an effect or an action takes place: ganglion. Collection of cell bodies located outside the cns: plexus. Extensive network of axons or cell bodies: synapse. Junction of a neuron with another cell. E. g. end of a neuron with a muscle cell or another neuron.

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