NPB_101_Sample_Questions

NPB_101_Sample_Questions - NPB 101 Sample Questions WOW

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Unformatted text preview: NPB 101 Sample Questions WOW ldonflfythoioflerofmedmicewatbestmplelasmestamntoranmmmaquesflon. 1. MtheTflUEatatemantaboul homeostasis: Agoalofhaneostasisistoooumucharwinmwptfint Every oompormthbloodishomeostafimfly mguiatod Homooataficloopamreflexos Poslflvefeedbadthamajorfoanamofhoms 99 57!» 2. AMWWWMMWMMWmmemmmmWM. Whatwouldmistoxlntamet? a. Thanemornuswlarluncflon d. Dans. bodies b. Gap panama e. V-galed Na+ channels c. Tight jundlons 3. Inaoollsimtfla’entotsaoellmm... a. V—gaud Na' channels d. The nACh-R b. The Na’rK‘ ATPase 9. Na’ never enters a resting cell c. Na' leak ohanneis 4. For a routing call... a. Pantomime!!!” higherman PK+ b. lnadlvafiongatesblockNa‘manneis . c. ThesystomiaatequilibrEUm d. E...=0mv e. EmmbecawmadbosiufimmesoidmanHodgkinKatzequaflon 5. Thaupswlngofanacdonpotenfiausasoodateduflm... a. V—gatodNa+cl-Iannelaaivauon b. 30mm 6. Depolarizaflmpastmrashold d. TWOofflaaboveamWansmtomlsquosuon a. Auofmenboveamoonodanmrstomisquesflon 6. It's W dopamian 7. You diagnoaeyourpafient assufferingfmmademyelinafion disease. You cametomiscondusionontho observaflon that his neurons... 3. Donoihawawonpounflals b. Havahlghintamalreslsmnoe c. Condudaofimpomnfiaism 10. 11. 12. 13. 14. d. Are not surrounded by extracellular fluid e. Have large axons A neurotoxin inhibits parasympathetic pathways, but not sympathetic or somatic motor pathways. What could this toxin be doing? It inhibits Ca2+ channels It antagonizes mACh- receptors a. It prevents acetylcholine release d. b. It antagonizes nACh-receptors e. c. It hyperpolarizes neurons In response to a ringing telephone, your patient suffers poor ability to orient his body toward the phone prior to reaching with the hand to answer it. She most likely suffers a deficit in... a. The auditory hair cells d. The premotor cortex 1). The semicircular canals e. The limbic associative cortex c. The motor cortex After suffering a stroke, Patient HM fails to shave one the left side of his face. but shaves the other side. You immediately suspect damage to the... a. Right parietal-tamporal-oCcipital lobe d. Right eye b. Therightcorticospinal tracts e. Rightcerebrocerebellum c. Right motor cortex A patient presents inability to feel painful stimuli in the right foot, but can easin wiggle the left toes in response to a tickle to the same foot. The most likely diagnosis is... a. Right spinal cord hemisecticn d. Left spinal cord hemisection b. Left posterior parietal damage 9. Left somatosensory cortex damage 0. Right motor cortex damage What is a major feature of somatic afferents? They synapse up0n postganglionic autonomic neurons They can exhibit habituation The cell body is in the ventral root Some are responsible for taste detection 9??? In pain withdrawal reflexes, an inhibitory intemeuron may be activated in the spinal cord. What is the purpose of activating this neuron? It reduces pain perception It hyperpolarizes sensory afferents in the affected limb It inhibits motor neurons innervating extensors of the affected limb It inhibits the parasympathetic efferents it slows all motor activity 999?? Pick the FALSE statement about temperature detection: a. Wann receptors detect dynamic temperature change b. The sensory afferents travel via the spinothalamic tract c. Cold receptors are anesthetized at 10°C and lower 15. 16. 17. 18. 19. 20. 21. 22. d. Temperature can be considered a somatic stimulus Rapid adaption occurs in in response to Efferents, high frequency stimulation The CNS, monotonous and repeated stimulation Receptor afferents, sustained stimulation Receptor cells. noxious stimuli sass What occurs in a photoreceptor exposed to light? a. Depolarization b. Na+ channel inactivation c. Phosphcdiesterase activation d. An increase in [cGMP]i e. Photopigment destruction Pick the TRUE statement: Rods are primarily responsible for visual acuity Cones respond to many wavelengths, but are maximally sensitive to a narrow range The fovea is the blind spot in the retina The left thalamus projects to the left and right visual cortex 0.90"!“ The loudness of sounds is encoded by... How long a hair cell depolarizes The frequency of the sound wave Which region of the Organ of Corti that is maximally displaced The amplitude of the sound wave eons Broca's aphasia is noted by... Difficulty transducing sound Production of normal words. but used as jibberish ignoring one half of the visual field Difficulty producing words. alth0ugh an ability to understand sentences 9??? in skeletal muscle. one of the first steps in contraction is Ca2+ binding to... a. Troponin b. Tropomyosin c. Calmodulin d. Myosin e. Actin Unlike skeletal muscle, smooth muscle contraction requires... Myosin light chain phosphorylation Tropomyosin phosphorylation Cytoplasmic Ca2+ removal Actin phosphorylation Contraction of Intermediate filaments 9.3957!” In skeletal muscle... a. Large motor units contain larger muscle cells than small motor units b. The optimal length is when the muscle is completely stretched out 23. 24. 25. c. d. Small loads are moved slower than large loads A load is moved during isotonic contraction Why are y-motor neurons co-activated during contraction? P-F’P'?’ In unitary smooth muscle, depolarizations travel between muscle cells via a. b. c. To increase contractile force To speed up contraction To prevent muscle over contraction To maintain the normal length of the muscle spindle Gap junctions d. Tight juntions Dense bodiesibands e. Neuromuscular junctions Neurons Twitch summation... a. b. c d Results in tetany Is caused by increases in endoplasmic reticulum [Ca2+] Requires low frequency muscle stimulation Is a product of EPSPs and IPSPs in muscle ...
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This note was uploaded on 04/21/2010 for the course BIO SCI npb 101 taught by Professor Fuller during the Spring '10 term at UC Davis.

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NPB_101_Sample_Questions - NPB 101 Sample Questions WOW

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