PATHO: NERVOUS SYSTEM

6. Parkinson and Huntington diseases are associated with defects in which of the following? a. basal ganglia b. thalamus c. medulla oblongata d. cerebellum

7. Which of the following controls reflex activities concerned with heart rate, blood pressure, respirations, sneezing, swallowing, and coughing? a. medulla oblongata b. pons c. midbrain d. cerebellum

8. Which of the following is a characteristic of upper motor neurons? a. They directly influence the muscles b. Their cell bodies are located in the gray matter of the spinal cord c. They extend their dendritic processes out of the CNS d. They influence and modify spinal reflex arcs

9. Which of the following groups of cranial nerves contains parasympathetic fibers? a. Cranial nerves I (Olfactory), II (Optic), XI (Spinal accessory), XII (Hypoglossal) b. Cranial nerves IV (Trochlear), V (Trigeminal), VI (Abducens), VIII (Vestibulocochlear) c. Cranial nerves III (Oculomotor), VII (Facial), IX (Glossopharyngeal), X (Vagus) d. Cranial nerves IX (Glossopharyngeal), X (Vagus), XI (Spinal accessory), XII (Hypoglossal)

10. Which of the following is an effect of the sympathetic nervous system? a. reduces heart rate b. stimulates peristalsis c. causes pupillary constriction d. increases blood sugar levels

11. Which of the following is an effect of the parasympathetic nervous system? a. increase heart rate b. inhibit peristalsis c. causes pupillary constriction d. increases blood sugar levels

17. The C sensory fiber type has the __________ conduction velocity. a. fastest b. slowest c. indifference d. none of the above

18. "The action potential jumps from node to node," describes which of the following? a. sensory transduction b. spatial summation c. electrotonic conduction d. saltatory conduction

19. Radiculopathies are disorders of which of the following? a. ventral rami b. cerebrum c. dorsal columns d. roots of the spinal nerves

23. Atrial fibrillation, rheumatic heart disease and valvular prosthetics are risk factors for which type of stroke? a. clotting b. hemorrhagic c. necrotic d. embolitic

25. Which of the following are characteristics of meningiomas? a. They compress from the subarachnoid space b. They compress from within neural tissues c. They compress spinal nerves d. They compress from outside the spinal cord