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Anatomy and Physiology Practice Test: The Peripheral Nervous System and Reflex Activity
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Avg score: 85% Most missed: “After axonal injury, regeneration in peripheral nerves is guided by ________.”

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Anatomy and Physiology Practice Test: The Peripheral Nervous System and Reflex Activity
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25 Questions

1. Which of the following is not a main level of neural integration in the somatosensory system?
2. Dorsal and ventral rami are similar in that they both contain sensory and motor fibers.
3. A fall or an improperly delivered gluteal injection could result in ________.
4. The fluid contained within the membranous labyrinth is called perilymph.
5. There are three layers of neurons in the retina. The axons of which of these neuron layers form the optic nerves?
6. Retinal detachment always results in loss of vision.
7. The oval window is connected directly to which passageway?
8. The extrinsic eye muscle motor units contain only 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells.
9. Farsightedness is more properly called ________.
10. The photoreceptor cells are sensitive to damage from light.
11. Researchers have found that retinal ganglionic fields are of two types: on center or off center.
12. The only cranial nerves to extend beyond the head and neck region are the vagus nerves.
13. What is the main function of the rods in the eye?
14. Dermatomes are skin segments that relate to sensory innervation regions of the spinal nerves.
15. The optic disc is the location where the optic nerve leaves the eyeball.
16. A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged?
17. There are 41 pairs of spinal nerves.
18. Taste buds are not found ________.
19. The oil component found in tears is produced by the ________.
20. In the somatosensory system there are no third-order neurons in the cerebellum.
21. The mucous membrane that lines the eyelids and is reflected over the anterior surface of the eyeball is the conjunctiva.
22. Problems in balance may follow trauma to which nerve?
23. Starting at the spinal cord, the subdivisions of the brachial plexus are (in order):
24. The glossopharyngeal nerve is the only cranial nerve that contains sensory fibers.
25. Irritation of the phrenic nerve may cause diaphragm spasms called hiccups.