Examlex
A laser beam takes 24 ms to travel from a rocket to the reflective surface of a planet and back to the rocket.How far is the rocket from this planet's surface? (c = 3.0 × 108 m/s)
Spinal Cord
A long, thin, tubular structure made up of nervous tissue, extending from the brainstem down the back, conducting signals to and from the brain.
Parasympathetic Division
A division of the autonomic nervous system that is involved in rest-and-digest functions, conserving energy and restoring the body to a state of calm.
Sympathetic Division
A part of the autonomic nervous system that increases the body's readiness for physical action by accelerating the heart rate, constricting blood vessels, and raising blood pressure.
Autonomic Nervous System
The autonomic nervous system is a part of the peripheral nervous system that controls involuntary body functions, including heart rate, digestion, and respiratory rate.
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