1. What are neurons or nerve cells?
- Neurons are excitable cells that transmit electrical signals.
2. Define the nervous system.
- It is the master controlling and communicating system of the body.
3. What are the functions of the nervous system?
- The functions include sensory input, integration, and motor output.
4. Describe sensory input.
- Sensory input gathers information from internal and external sensory receptors.
5. Explain integration.
, - Integration processes and interprets the sensory input.
6. Define motor output.
- Motor output activates effector organs (muscles and glands) to produce a response.
7. What is the central nervous system composed of?
- It consists of the brain and spinal cord located in the dorsal body cavity.
8. Describe the peripheral nervous system.
- The peripheral nervous system includes spinal and cranial nerves.
9. What are the two functional divisions of the peripheral nervous system?
- They are sensory (afferent) and motor (efferent) divisions.