82. Sympathetic preganglionic fibers extend from the CNS to autonomic ganglia via the: A) dorsal roots and gray rami communicantes B) dorsal roots and white rami communicantes C) dorsal roots and sympathetic chains D) anterior roots and gray rami communicantes E) anterior roots and white rami communicantes 83. Sympathetic stimulation to the heart is provided by fibers from the: A) hypogastric ganglion B) celiac ganglion C) inferior cervical ganglion D) pterygopalatine ganglion E) submandibular ganglion 84. The sympathetic trunk ganglion located at the level of vertebra C2 and an internal carotid artery is the: A) superior cervical ganglion B) middle cervical ganglion C) inferior cervical ganglion D) ciliary ganglion E) pterygopalatine ganglion 85. Axon collaterals of sympathetic preganglionic fibers that extend between sympathetic trunk ganglia form the: A) anterior roots B) posterior roots C) sympathetic chains D) white rami communicantes E) gray rami communicantes 86. Splanchnic nerves from the thoracic area terminate in the: A) inferior cervical ganglion B) celiac ganglion C) superior mesenteric plexus D) terminal ganglia near the heart and lungs E) dorsal root ganglia associated with thoracic spinal nerves
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Identify the sympathetic preganglionic fibers that extend from the CNS to autonomic ganglia. These fibers are located in the sympathetic trunk, which is a network of nerve fibers that originate from the central nervous system (CNS) and travel to various parts of Show moreā¦
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19. Dendrites: A) carry impulses from ganglia to organs B) are found only in the peripheral nervous system C) carry impulses toward a nerve cell body D) are solely responsible for sodium flux 20. The primary function of the spinal cord is: A) simple reflexes B) to help integrate incoming and outgoing signals to and from the brain C) to act as a link between the brain and the body D) all are correct 21. The autonomic nervous system: A) regulates only organs on the left side of the body B) has preganglionic but no postganglionic fibers C) is only part of the central nervous system D) has cell bodies in both the spinal cord and in ganglia 22. The cell bodies of the postganglionic neurons of the sympathetic system lie in the: A) chain of ganglia running alongside the spinal cord B) gray matter of the brain C) the gray matter of the spinal cord D) ventral root ganglia 23. Which type of neuron conducts information away from the central nervous system out to effectors in the periphery? A) sensory neuron B) interneuron C) motor neuron 24. Which type of neuron conducts information from receptors in the periphery to the central nervous system? A) sensory neuron B) interneuron C) motor neuron 25. The portion of the neuron that conducts impulses away from the cell body is the: A) dendrite B) axon C) peripheral process
Madhur L.
151. The main visceral control center of the brain is the _?_. (a) hypophysis (b) hypothalamus (c) reticular formation (d) thalamus (e) putamen. 152. Cranial nerves can carry: (a) motor fibers only (b) sensory fibers only (c) a mixture of motor and sensory fibers (d) all of these (e) none of these. 153. If a cranial nerve carries motor fibers, then the neurons that the axons belong to are located in _?_. (a) brainstem nuclei (b) cerebral cortex (c) basal nuclei (d) all of these (e) none of these 154. If a cranial nerve (except nerves I and II) carries sensory fibers, then the bodies of the neurons are located in (a) sensory ganglia (b) spinal ganglia (c) cerebral cortex (d) thalamus (e) none of these 155. The ophthalmic, maxillary, and mandibular nerves are branches of the _?_ nerve. (a) facial (b) vagus (c) trigeminal (d) oculomotor (e) glossopharyngeal AUTONOMIC NS 156. Cell body of this autonomic neuron lies outside the CNS. (a) collateral ganglia (b) rami communicantes (c) pre-ganglionic neuron (d) splanchnic nerves (e) post-ganglionic neuron. 157. Division that is dominant during exercise, excitement, or emergencies. (a) parasympathetic (b) enteric nervous system (c) inferior hypogastric plexus (d) sympathetic (e) cholinergic. 158. A class of preganglionic fibers present in both sympathetic and parasympathetic divisions. (a) postganglionic neuron (b) adrenergic (c) medulla (d) cholinergic (e) none of the above
Shaiju T.
QUESTION 73 What carries motor commands from the brain along the spinal cord? a. Spinal nerves b. Descending tracts c. Ascending tracts d. Both ascending and descending tracts e. None of the these. QUESTION 74 Which of the following statements is FALSE? a. Taste signals travel from the tongue through the facial and hypoglossal nerves. b. The middle ear consists of an air-filled chamber. c. Rods secrete glutamate from the base of the cell when NOT exposed to light. d. Peptide hormones are synthesized by the rough endoplasmic reticulum. e. None of the these. QUESTION 75 Neurosomas of the ventral root are located in the __, whereas neurosomas of the dorsal root are located in the ___ . a. posterior root ganglion; gray matter b. posterior root ganglion; white matter c. gray matter; posterior root ganglion d. posterior horn; anterior horn e. white matter; posterior root ganglion f. None of the these. QUESTION 76 In what region do the ventral rami of the spinal nerves NOT form nerve plexuses? a. the cervical region. b. the sacral region. c. the thoracic region. d. the lumbar region. e. the brachial region. f. None of the these. QUESTION 77 A neuron whose axon synapses in the adrenal medulla is a __ neuron, and releases the neurotransmitter ___ . a. somatic; norepinephrine (NE) b. preganglionic; acetylcholine (ACh) c. postganglionic; norepinephrine (NE) d. postganglionic; acetylcholine (ACh) e. preganglionic; norepinephrine (NE) f. None of the these. QUESTION 78 A major difference between smooth muscle fibers and skeletal muscle fibers in terms of calcium influx is that ____. a. calcium ions are stored in the sarcoplasm of skeletal muscle b. calcium ion influx occurs mostly from the extra cellular fluid in smooth muscle c. smooth muscle contraction does not involve calcium d. Both (i) calcium ions are stored in the sarcoplasm of skeletal muscle and (ii) calcium ion influx occurs mostly from the extra cellular fluid in smooth muscle. e. None of the these.
Sri K.
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