PSY 1101 Chapter Notes - Chapter 2: Endorphins, Blood Sugar, Reuptake
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PSY 1101 Full Course Notes
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Neural communication: neurons, neuron (nerve cell) is a basic building block of the nervous system. Sensory neurons carry messages from the body"s tissues and sensory organs inward to the brain and spinal cord for processing: the brain and spinal cord then send instructions out to the body"s tissue via motor. If strong enough, this produces depolarization and an action potential: 2. depolarization causes another action potential further down the axon. Gates in this neighboring area are now open, and charged sodium ions rush in. Meanwhile, a pump in the cell membrane transports the sodium ions back out of the cell: 3. as the action potential increases speedily down the axon, the first section has now completely recharged, neurons follow the all-or-none- response. The brainstem: brains oldest and innermost region is the brainstem, begins where the spinal cord swells slightly after entering the skull (swelling, above the medulla sits the pons (help coordinate movements.