Answer :
Final answer:
The nervous system has roles in sensory input, integration, and motor output. Neurons are the functional units, and neurotransmitters help in signal transmission.
Explanation:
Roles of the Nervous System:
- Sensory Input: receiving information from sensory receptors
- Integration: processing and interpreting the sensory input
- Motor Output: responding to the processed information by triggering an appropriate action
Functional Unit of Nervous System:
The neuron is the functional unit of the nervous system, transmitting electrical signals.
Neurotransmitters:
Neurotransmitters are chemical messengers released by neurons to communicate with other neurons. They play a key role in transmitting signals and regulating various functions in the nervous system.
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