Nervous system
from class: Pharmacology for Nurses Definition The nervous system is a complex network of nerves and cells that transmit signals between different parts of the body. It comprises the central nervous system (CNS) and the peripheral nervous system (PNS).
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Predict what's on your test 5 Must Know Facts For Your Next Test The CNS includes the brain and spinal cord, while the PNS consists of all other neural elements. Neurotransmitters play a key role in signal transmission within the nervous system. The autonomic nervous system, part of the PNS, regulates involuntary functions like heart rate and digestion. Pharmacological agents can affect neurotransmitter activity to treat various neurological disorders. Myelin sheaths around axons speed up electrical signal transmission. Review Questions What are the two main components of the central nervous system? How do neurotransmitters influence signal transmission in the nervous system? What is the role of myelin sheaths in neuronal communication? "Nervous system" also found in:
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