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N&E System
Nervous and Endocrine System (Psychology 1)
Term | Definition |
---|---|
Neuron | Fundamental Units of the Brain and Nervous System |
Dendrite | The end of a Neuron where it receives input from other Neurons |
Axon | The line on which an input travels toward the axon terminal |
Axon Terminal | Where a neuron exerts output |
Action potential | The movement of input down a neuron |
Resting potential | The state of the neuron between action potentials |
All-or-None Principle | A Neuron will always give the same amount of energy, never more and never less |
Synapse | The distance between two neurons that allow for the exchange of input |
Neurotransmitters | Carry messages from one neuron to another |
Excitatory effect | Increases the likelihood of an action potential |
Inhibitory effect | Decreases the likelihood of an action potential |
Receptor Cells | Receives Stimulus and reacts to it. |
Sensory Nerves | Nerves that carry smell, taste, sight, hearing and feeling messages to the brain |
Interneurons | Connect the different parts of the brain |
Central nervous system | Nervous system made up of the brain and spinal cord |
Peripheral nervous system | The nerves that branch out from the central nervous system |
somatic nervous system | controls the muscles |
autonomic nervous system | Runs the organs |
Sympathetic division | Runs fight or flight response |
parasympathetic division | runs the state of relaxation |
endocrine system | The glands that make hormones |
Hormone | Causes responses in the body |
Pituitary gland | Makes and stores hormones |