BIO271H1 Lecture Notes - Lecture 1: Resting Potential, Enteric Nervous System, Peripheral Nervous System

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18 Jan 2018
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Lecture 1 | structure and function of neurons, resting membrane potential. Peripheral nervous system is mainly your senses and the execution of it consists of afferent and efferent neurons. Afferent sends signals to nervous system coming from somatic (voluntary senses), special senses, visceral senses. Output through efferent will be through somatic (voluntary) and autonomic (involuntary): output of information to the skeletal muscle autonomic can happen through sympathetic or parasympathetic. Sympathetic prepares you for intense execution (fight or flight) Parasympathetic system relaxes-effects the enteric nervous system, slows down the functions. Enteric nervous system is responsible for neurons in gi tract-independent of rest of nervous system but it does connect to it through the parasympathetic system. Transmit information from sensory receptors or visceral receptors to cns for. Most of your neurons are located within the central nervous system. Neurons are excitable cells that communicate by transmitting electrical impulses; represent 10% of cells in the nervous system.

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