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A large block of wood and a smaller block of iron on weighing scales both register 1 ton. Taking buoyancy of air into account, which has the greater mass?
Electrochemical Signals
Messages sent by neurons through a combination of electrical and chemical processes.
Nervous System
The network of nerve cells and fibers that transmits nerve impulses between parts of the body.
Somatic Nervous System
A part of the peripheral nervous system that handles voluntary control of body movements through the control of skeletal muscles.
Endocrine System
A network of glands in the body that produce hormones, which regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
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