Nervous System

∞ generated and posted on 2016.01.17 ∞

Neurons are the means by which animals transmit signals from specific locations to specific locations within the body; the peripheral nervous system is involved in conduction of these signals to and from the spinal cord and, to a lesser extent, directly to the brain as well.

Neurons carry action potentials either from cell to cell or instead from signals received by receptors towards the central nervous system. The Peripheral Nervous System consists of motor neurons and sensory neurons which carry out these two functions, respectively, with motor neurons originating in the spinal cord of the central nervous system and projecting outward to the rest of the body and sensory neurons originating peripheral to the central nervous system and directing signals (action potentials) towards the central nervous system.

Links to terms of possible interest: Action potential, Depolarization, Gated channel, Ion, Ion-gated channel, Membrane potential, Nervous system, Potassium ion, Repolarization, Resting potential, Sodium ion, Sodium-potassium pump, Voltage

The above video is an outstanding introduction to the very basics of what the nervous system is all about.

The above video is a quick, well done, and animated introduction to the peripheral nervous system.

The above introduction is funny, and there is pizza!

The above video is pretty heavy duty…