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The entropy of an isolated system never increases..
Spinal Cord
A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, transmitting neural signals between the brain and the rest of the body.
Knee Jerk Reflex
A quick involuntary response involving muscle contraction, triggered by a tap on the tendon below the knee cap.
Spinothalamic Tract
A sensory pathway in the spinal cord and brain that carries information about pain and temperature to the brain.
Axons
The long, threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.
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