Q. No.
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A duct within the mesencephalon, contains cerebrospinal fluid (CSF), and connects the third ventricle to the fourth ventricle is called:
| 1. | interventricular foramen | 2. | cerebral aqueduct |
| 3. | foramen of Monro | 4. | foramen of Magendie |
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A catecholamine is released as a neurotransmitter by:
1. preganglionic sympathetic fibers
2. postganglionic sympathetic fibers
3. preganglionic parasympathetic fibers
4. postganglionic parasympathetic fibers
Catecholamines like adrenaline and noradrenaline are derived from the amino acid:
1. glycine
2. tyrosine
3. tryptophan
4. glutamic acid
Cocaine acts by interfering the reuptake of dopamine. Thus, cocaine is a:
1. sympathetic agonist
2. sympathetic antagonist
3. sympathetic neurotransmitter
4. parasympathetic agonist
ANS is most directly under the control of:
1. medulla oblongata
2. cerebrum
3. cerebellum
4. hypothalamus
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The neurotransmitter released by postganglionic parasympathetic neurons is:
1. acetylcholine
2. norepinephrine
3. epinephrine
4. dopamine
Parkinson disease, caused by lack of dopamine in substantia nigra, is not characterized by:
1. Tremor
2. Rigidity
3. Hypokinesia
4. Flaccid paralysis
Very fast correction during the ongoing rapid muscular activity initiated elsewhere is done by:
| 1. | Primary motor cortex | 2. | Wernicke’s area |
| 3. | Basal ganglia | 4. | Cerebellum |
Light skin touch is sensed by _____ receptors.
1. Pacinian
2. Meissner
3. free nerve endings
4. nociceptor
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