KINESIOL 1A03 Lecture Notes - Lecture 11: Axon Hillock, Parasympathetic Nervous System, Sympathetic Nervous System

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Seeing the bear would be sensory information, maybe auditory. Most situations, sympathetic system would activate and our blood vessels will dilate, our heart rate increase, gland release hormones (motor output) Parasympathetic would have opposite effect (lower hear rate, etc) Receptor -> sensory ns -> cns -> motor ns -> effector. Neurons dendrite cytoplasmic extension of the cell body. Axons carry nerve impulse from one region to another. Neuroglia cannot generate action potential (electrical signal), they serve to support and protect neurons. Nervous tissue is electrically excitable, or able to generate action potential. We don"t want all sensory input interpreted by brain, sometimes we want to ignore sensory input. Dendrites is a decision making process, send a signal or stop a signal. Place where axon attaches to the neuron or neural region is called the axon hillock (funnel shaped region) Axon hillock where it meets with axon is called initial segment,

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