Chapter Overview
This chapter discusses how the human body detects changes in the environment and coordinates a response using the nervous system. It explains the structure and function of neurons, the organization of the human nervous system, transmission of nerve impulses, and the role of sense organs, especially the eye and ear.
Important Keywords
- Neuron: Structural and functional unit of the nervous system.
- Synapse: Junction between two neurons or a neuron and an effector cell.
- Reflex Action: An automatic, rapid response to a stimulus.
- CNS (Central Nervous System): Consists of the brain and spinal cord.
- PNS (Peripheral Nervous System): Composed of nerves that connect CNS to other parts of the body.
- Action Potential: A short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls.
- Cerebrum: Largest part of the human brain responsible for voluntary actions.
- Medulla Oblongata: Controls involuntary functions like heartbeat and respiration.
Detailed Notes
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