Download Exam 2 Practice Test

Fiorino 2017
Practice Exam 2
1.) Which of the following is NOT a characteristic of the dorsal column system?
a) third order neurons ascend to somatosensory cortex
b) axons of primary afferent neurons ascend to the contralateral midbrain
c) second order neurons ascend to contralateral thalamus
d) processes sensation of fine touch, pressure, and vibration
2.) Dermatomes are associated with which of the following phenomena?
a) vertigo
b) dysphasia
c) referred pain
d) fever
3.) Which of the following cranial nerves is not associated with taste sensation?
a) VII
b) VIII
c) IX
d) X
4.) Which of the following is a characteristic of the flocculonodular system?
a) the signal terminates in the inferior lobe of the cerebellum
b) coordinates rapid movement
c) part of the auditory system
d) pathway involves synapse in ventral horn of spinal cord
5.) All of the following are true of process of photoreception except:
a) metarhodopsin II acitavates transducing (G protein) in order to activate phosphodiesterase
b) Vitamin A deficiency causes nightblindness
c) light converts 11-cis-retinal to all-trans retinal
d) phosphodiesterase increases cGMP
e) the result is hyperpolarization and closure of Na+ channels
6.) The part of the retina that is most densely packed with cones, and therefore has the highest
acuity, is the:
a) optic disc
b) fovea centralis
c) cribriform plate
d) olfactory bulb
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7.) Which of the following is not a function of astrocytes?
a) cover synaptic contacts between neurons
b) release K+ into the extracellular environment
c) form the blood-brain barrier (BBB)
d) phagocytize degenerated axon terminals
e) absorb glutamate and GABA to limit the effect of these neurotransmitters
8.) All of the following are characteristic of the Organ of Corti except:
a) contains cells needed for auditory stimuli
b) hair cell cilia are embedded in the tectorial membrane
c) inner hair cells outnumber outer hair cells
d) cell bodies of CN VIII are located in the spiral ganglion
d) the basilar membrane is more flexible than the tectorial membrane
9.) Which of the following molecules can not pass through the BBB?
a) oxygen
b) ethanol
c) carbon dioxide
d) enzymes
10.) Which of the following is a characteristic of the auditory pathway?
a) the Organ of Corti transmits information to the efferent cochlear nerves
b) the cochlear nerves only synapse on the dorsal cochlear nucleus of the medulla
c) fibers ascend in the lateral lemniscus to the inferior colliculus
d) fibers from the colliculus ascend to the inferior geniculate nucleus of the thalamus
11.) Myelin is produced by _________ in the CNS and _________in the PNS.
a) astrocytes; oligodendrocytes
b) Schwann cells; astrocytes
c) neuroglia; microglia
d) ependymal cells; satellite cells
e) oligodendrocytes; Schwann cells
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12.) Which of the following is a function of the BBB?
a) maintains a constant environment of neurons in the CNS
b) prevents any drug from getting to the brain
c) allows neurotransmitters to leave the CSF and enter the blood stream
d) may be destroyed by inflammation or tumorigenic growth
13.) Which of the following is true?
a) [Na] in CSF is less than [Na] in blood
b) creatinine is greater in CSF than in blood
c) glucose is greater in CSF than in blood
d) [bicarbonate] is equal in both blood and CSF
e) [Cl] is equal in blood and CSF
Match the following neurotransmitters to their appropriate location
a) sympathetic nerve endings in hypothalamus
b) neuromuscular junction
c) synapses in the spinal cord
d) basal ganglia and hypothalamus
14.) Dopamine
15.) Glycine
16.) Norepinephrine
17.) Ach
18.) Which of the following is false?
a) cardiac muscle occurs only in the heart
b) smooth muscle is striated
c) smooth muscle occurs in walls of hollow organs
d) skeletal muscle is 40% of body weight
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19.) Which of the following is false?
a) golgi tendon organs are group Ib afferents that detect muscle tension
b) Pacinian corpuscles detect pain
c) free nerve endings detect noxious stimuli
d) muscle spindles are parallel to extrafusal fibers
20.) (Fill in the blanks) The neurotransmitter ___________ binds to _____ receptors in the GI
tract to ________ peristalsis.
a) Ach; beta2; decrease
b) norepinephrine; beta1; decrease
c) Ach; muscarinic; increases
d) norepinephrine; alpha2; increases
21.) Which of the following is true?
a) GABA is an inhibitory neurotransmitter that decreases influx of Cl
b) Norepinephrine is an inhibitory neurotransmitter that increases Na influx
c) Glycine is an inhibitory neurotransmitter that increases Cl influx
d) epinephrine is a stimulatory NT that decreases blood pressure
22.) What is the difference between epinephrine and norepinephrine?
a) Only norepinephrine influences BP
b) Norepinephrine influences blood sugar
c) epinephrine is involved in digestion
d) epinephrine is involved in glucose metabolism
23.) Which of the following is true?
a) alpha1 stimulation increses cAMP
b) alpha2 stimulation increases cAMP
c) beta1 receptors increase intracellular energy
d) alpha1 receptors cause the SR to absorb calcium
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