Chapter 10
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| show | CNS: brain, oligodendrocytes, interneurons
PNS: thermoreceptors, satellite cells, motor neurons
Page 375
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| 1b. What is CNS? | show 🗑
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| show | Peripheral Nervous System; Bundles of neurons (spinal and cranial nerves) Connects the CNS to the body parts Page 375
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| show | Neurotransmitters will not be released into the synapse via exocytosis Page 385-387
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| show | Lessen pain by blocking receptors
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| 4. A neuron in the aorta detects oxygen content in the blood and relays this information to the brain. This neuron is an__________ fiber in the__________ nervous system. | show 🗑
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| 5. A positive feedback loop occurs when the outcome of an event causes the event to continue occurring and amplifies its effects. Which of the following aspects of an action potential constitutes a positive feedback loop? | show 🗑
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| 6. If a neuron is stimulated causing changes in the membrane potential to the point where voltage-gated Na+ channels open and begin depolarizing the cell, the neuron is said to have reached__________. | show 🗑
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| 7. In Guillain-Barre syndrome, the immune system attacks and degrades the myelin sheath of PNS axons. Predict the effect this will have on nerve impulse and motor function. | show 🗑
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| 8. The oculomotor nerve is a cranial nerve containing nerve fibers that innervate eye muscles and control eye movement. These fibers are examples of__________. | show 🗑
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| show | Gather information by detecting changes inside and outside the body. Page 367
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| show | Neurofilaments Page 370
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| show | Chromatophilic substance Page 368
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| 12. What is myelin? | show 🗑
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| 13. A myelinated nerve fiber is_________, whereas an unmyelinated nerve fiber is_________. | show 🗑
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| show | axons of the CNS lack neurilemmae. Page 376
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| show | Schwann cells Page 375
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| 16. Dendrites of unipolar neurons are parts of what type of neuron? | show 🗑
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| 17. How is an impulse transmitted from one neuron to another? | show 🗑
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| show | Propagation of a series of action potentials along a nerve fiber constitutes an impulse. Page 380
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| 19. The most rapid conduction of an impulse along an axon occurs on a fiber that is__________. | show 🗑
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| show | 2,1,4,3 Page 379
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| 21. How does a neuron cell membrane become depolarized? | show 🗑
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| 22. When is an action potential triggered? | show 🗑
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| 23. What occurs during reuptake? | show 🗑
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| 24. What is convergence? | show 🗑
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| 25. How do diverging axons amplify an impulse? | show 🗑
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| 26. Why do opiate drugs derived from poppies relieve pain in humans? | show 🗑
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| show | dendrites Page 368
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| show | Controls the movement of muscles Page 366
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| show | Integrative, motor, and sensory Page 367
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| 30. Masses of myelinated nerve fibers appear__________. | show 🗑
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| 31. How many axons and/or dendrites can a neuron have? | show 🗑
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| 32. Every neuron has which of the following components? | show 🗑
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| show | lipids Page 370
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| show | oligodendrocytes Page 376
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| 35. Most of the neurons in the brain and spinal cord are__________. | show 🗑
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| show | Schwann cells Page 375
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| 37. Clusters of neuron cell bodies in the PNS are called__________. | show 🗑
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| 38. Which of the following neuroglia are not part of the CNS? | show 🗑
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| 39. Synaptic knobs are at the ends of__________. | show 🗑
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| show | exocytosis Page 384
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| show | Calcium ions Page 386
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| show | is faster than conduction on an unmyelinated fiber Page 380
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| 43. The resting cell membrane is more permeable to which ion? | show 🗑
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| show | Hyperpolarized CA 10.3
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| 45. Roughly how long does an excitatory postsynaptic potential last? | show 🗑
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| 46. Each neuron in the CNS may receive input from which structure(s)? | show 🗑
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| show | Acetylcholine (ACh) Page 386
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| show | Interneurons Paget 391
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| 49. What disorder involves an immune response that affects the myelin coating on axons throughout the spinal cord and brain, triggering inflammation and leaving scars? | show 🗑
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| 50. What neurotransmitter is most likely released when a person uses a drug that creates a sense of well-being? | show 🗑
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| 51. What are the two major cell types found in nervous tissue? | show 🗑
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| 52. What structural type of neuron has a single process that extends from the cell body? | show 🗑
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