Nervous System

3. ________ are transmitted as changes in membrane potential.
5. Neurons that transmit signals to muscle cells.
8. Voltage-gated Na+ channels open first and Na+ flows into the cell at ________ potential.
10. Contains the somatosensory cortex, and sensory association cortex.
11. The nerves and the ganglia form this system.
12. The brain and the spinal cord form this system.
13. Mental deterioration characterized by confusion and memory loss.
15. Consists of bundled axons that have myelin sheaths.
16. Consists mainly of neuron cell bodies, dendrites, unmyelinated axons, and glia.
17. Are Neurons in the brain.
19. 1 type of Gated Ion channel.
20. Stimulus increases inflow of positive ions or outflow of negative ions. Makes inside of membrane more positive.
23. Action potentials move from __________ to synaptic terminal.
25. The Spinal Cord works independently of the brain as part of simple nerve circuits that produce these.
29. Conveys information to and from the brain and generates basic patterns of locomotion.
31. Potential Every cell has a voltage (difference in electrical charge) across its plasma membrane called a _______.
32. Most voltage-gated Na+ and K+ channels are_______, and some k+ channels (not voltage-gated) are open at resting potential.

1. The _________ potential is the membrane potential of a neuron not sending signals.
2. Contains the Auditory cortex.
4. During the ________, membrane permeability to K+ is at first higher than at rest, then voltage-gated K+ channels close; resting potential is restored.
6. Contains the visual association cortex, and the visual cortex.
7. Stimulus increases outflow of positive ions or inflow of negative ions. Makes inside of membrane more negative.
9. Cells in the nervous system that support, regulate, and augment the functions of neurons.
12. Formed in the brain through filtration of arterial blood.
14. During the ______ phase, the threshold is crossed, and the membrane potential increases .
18. 1 type of Gated Ion channel.
21. The movement of Na+ into the cell __________ depolarization and causes even more Na+ channels to open.
22. A strong stimulus results in a massive change in membrane voltage called an _______ potential.
24. When a stimulus depolarizes the membrane, ___channels open, allowing ___to diffuse into the cell
26. Contains the prefrontal cortex, the motor cortex, and Broca’s area.
27. Coordinates movement and balance and helps in learning and remembering motor skills.
28. During the _________ phase, voltage-gated Na+ channels become inactivated; voltage-gated K+ channels open, and K+ flows out of the cell.
29. Neurons that transmit info from sensors.
30. Axons of multiple nerve cells bundled together are ____________.