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human a and p quiz
chapter 7 -1
| Question | Answer |
|---|---|
| sensory receptors found in the skin, which are specialized to detect temperature, pressure changes, and pain | cutaneous sense organs |
| Specialized cells that myelinate the fibers of neurons found in the PNS | Schwann cells |
| Junction or point of close contact between neurons | Synapse |
| Bundle of nerve processes inside the CNS | Tract |
| Neuron, serving as part of the conduction pathway between sensory and motor neurons | Association neuron |
| Gaps in a myelin sheath | Nodes of Raniver |
| Collection of nerve cell bodies found outside the CNS | Ganglion |
| Neuron that conducts impulses away from the CNS to muscles and glands | Efferent neuron |
| Sensory receptors found in muscle and tendons that detect their degree of stretch | Proprioceptors |
| Changes, occurring within or outside the body, that affect nervous system functioning | Stimuli |
| Neuron that conducts impulses toward the CNS from the body periphery | Afferent neuron |
| Chemicals released by neurons that stimulate other neurons, muscles, or glands | Neurotransmitters |
| Period of repolarization of the neuron during which it cannot respond to a second stimulus | Refractory period |
| State in which the resting potential is reversed as sodium ions rush into the neuron | Depolarization |
| Electrical condition of the plasma membrane of a resting neuron | Polarized |
| Period during which potassium ions diffuse out of the neuron | Repolarization |
| Transmission of the depolarization wave along the neuron's membrane | Action potential |
| the chief positive intracellular ion in a resting neuron | Potassium ions |
| Process by which ATP is used to move sodium ions out of the cell and potassium ions back into the cell, completely restores the resting conditions of the neuron | Sodium-potassium pump |
| State in which all voltage gated Na+ and K+ channels are closed | Resting period |