Across
- 2. Specialized cells in every sensory system of the body that can turn other kinds of energy into action potentials (neural impulses) that the brain can process.
- 5. the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.
- 8. Gap between neurons
- 12. Nerves that carry information from the sense receptors to the spinal cord and brain.
- 14. the fact that neurons fire or they don't. They do not fire with varying intensity. Intensity is the product of the rate of fire.
- 15. neuromodulator that blocks the effects of a neurotransmitter
- 16. A threadlike extension of a neuron that carries nerve impulses away from the cell body toward the terminal button
- 18. neuromodulator that mimics the effects of a neurotransmitter
- 19. The nerves that travel to the skeletal muscles of the body
- 21. chemical messengers that distribute messages throughout the body
Down
- 1. classified under the autonomic branch of your nervous system this is involved in your fight or flight response
- 3. classified under the autonomic branch of your nervous system this is involved in calming you down after your fight or flight response kicks in
- 4. Nerves that carry information from the central nervous system to the muscles of the body.
- 6. the actual firing of an electrical impulse down the length of a neuron
- 7. The time it takes a neuron to recharge to be able to fire again after an action potential
- 9. neurons within the brain and spinal cord that process the information coming in through the sensory nerves from the receptor cells
- 10. part of a neuron that sends out the chemical message to the next neuron in the chain
- 11. part of a neuron that receives the chemical message from the previous neuron in the chain
- 13. chemical messengers that pass messages from one neuron to another
- 17. post synaptic potentials: the positive or negative charge that fluctuates in the post synaptic neuron until the balance is off enough to trigger an action potential
- 20. Brain Stem and Brain