Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long, thin processes called:
Correct answer: A. Axons
- A. Axons
- B. Dendrites
- C. Myelin sheath
- D. Schwann cell
Explanation
Axons are long, thin processes that transmit neural impulses from the cell body to other neurons or effector cells. Dendrites are short extensions for receiving signals. Schwann and myelin sheath provide insulation and increase conduction speed, but do not transmit impulses themselves.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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