BIO271H1 Lecture Notes - Internal Resistance, Positive Feedback, Saltatory Conduction

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21 Jan 2013
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Bio271h lecture 1: structure and function of neurons; action potentials. This is basically an introduction to fundamental neuroscience. It is not too scary but you have to pay attention. We will also talk about the respiratory system (both anatomical and the physiological aspect of it). We will not go in too much detail of the anatomy. But we do need to know roughly the definition of the nervous system. We will mostly focus on how each of the neurons is functioning. Made up of neurons and glia (general name for non-neuronal cells in the nervous system) Sensory neurons: relay nerve impulses toward the cns. Use same basic mechanisms to send signals. In the diagram are 3 types of neurons. The signal reception area is where in a sensory neuron there is input from the outside world. It could be light coming from the outside or sound waves. For motor neurons, it could be signal receptors from other neurons.

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