14. Parkinson\'s disease is caused by loss of dopaminergic neurons of the A. Cer

Question

14. Parkinson's disease is caused by loss of dopaminergic neurons of the A. Cerebellum B. Basal ganglia (nuclei) C. Brainstem D. Primary motor cortex E. Thalamus 15. "Dual innervation" refers to an organ receiving A. two nerves from the spinal cord B. both autonomic and somatic neurons C. both sympathetic and parasympathetic neurons D. both spinal and cranial nerves E. none of the above 16. Effector organs of the autonomic nervous system include all of the following except A. Heart muscle. B. Smooth muscle in the pupils of the eye. C. Respiratory muscles. D. Sweat glands. E. Salivary glands.

Explanation / Answer

14 B
Parkinson's disease is due to decrease of level of dopamine in substantia nigra whose basal ganglia is the part.
15 C
Dual innervation refers to the organ receiving both sympathetic and parasympathetic neurones
16 D
Sweat glands

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