Across
- 3. Ion channels that are activated by changes in the electrical potential of the cell membrane
- 4. The bodily system in vertebrates that is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs. It receives and interprets stimuli and transmits impulses to the effector organs.
- 9. A minute gap between messaging neurons
- 10. Synapse that uses neurotransmitters to transfer signals from one neuron to another
- 11. The resting voltage of a neuron (approximately -70 mV)
- 15. The extracellular space between pre- and postsynaptic neurons.
- 16. One of the cells that constitute nervous tissue, with the property of transmitting and receiving nervous impulses.
- 19. A signaling neuron
- 22. A reduction in the electrical potential of a cell that inhibits the firing of an action potential
- 24. Nerves responsible for sending out commands from the CNS to effectors in the body, such as muscles and glands
- 26. Nerve cell clusters
- 27. Chemicals used to send signals from one neuron to another
- 29. A neuron that receives messages
Down
- 1. Quick, unconscious movements controlled by the spinal cord
- 2. Nerves responsible for relaying sensation from the body to the central nervous system
- 5. The part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart
- 6. The return of a cell's electrical potential to its resting state
- 7. It is comprised of the cranial nerves, except the optic nerve, the spinal nerves, and the autonomic nervous system.
- 8. Any of the filamentous bands of nervous tissue that connect parts of the nervous system with the other organs and conduct nervous impulses.
- 12. The vesicle in the axon terminal of a neuron that contains neurotransmitters
- 13. A part of the vertebrate nervous system that innervates smooth and cardiac muscle and glandular tissues and governs involuntary actions (as secretion and peristalsis). Consists of the sympathetic nervous system and the parasympathetic nervous system
- 14. Part of the autonomicystem that tends to induce secretion, increase the tone and contractility of smooth muscle, and slow the heart rate.
- 17. The part of the peripheral nervous system associated with skeletal muscle voluntary control of body movements
- 18. Unmyelinated nervous tissue composed mainly neural cell bodies
- 20. nervous tissue composed mainly of axons.
- 21. Electrostatic potential energy within a membrane
- 23. The change in electrical potential along the membrane of a neuron associated with the passage of an impulse
- 25. he channel proteins connecting the pre- and postsynaptic neurons in electrical synapses
- 28. The part of the nervous system that includes the brain and spinal cord