Across
- 1. the brain and the spinal cord
- 4. cell body that maintains the health of the neuron
- 5. the neurons that carry incoming information from the sense receptors to the central nervous system
- 6. everything other than the brain and spinal cord
- 8. controls the glands and the muscles of the internal organs
- 9. support that access cells by providing nutrition structural support
- 11. heightened levels of fearfulness, anxiousness
- 12. electrical signals travelling down the axon
- 13. when neurotransmitters are not picked up by a receiving neuron so they are reabsorbed by a sending neuron
- 15. protects the axon and speeds up the neural impulse
- 16. the endpoint of neurons
Down
- 2. the body’s speedy electrochemical system
- 3. extensions of neurons that receive info
- 4. controls all of the body’s skeletal muscles
- 5. The minimum level of stimulation needed to activate the next neuron
- 7. central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs
- 10. simple automatic responses to sensory stimuli
- 14. nerve cell, building block of the nervous system
- 16. the extension of a neuron through which neural impulses