Exam 2

Exam 2 - {/3- PCB 3703 HUMAN PHYSIOLOGY I Fall ,2010 Second...

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Unformatted text preview: {/3- PCB 3703 HUMAN PHYSIOLOGY I Fall ,2010 Second Exam, . / 1/fo Nam-15 A ’1 -.~...«. MQKQ- up {K OWL Circle the most abpropriate answers. / “l. The type f glial cell that form myelin in the central nervous system is chwann cell . oligodendrocyte I c. astrocyte d. microglia /2. The inner l yer of meninges is the an d ra mater ia mater ct arachnoid (1. none of the above 1 3. For glucose molecules to move from blood to brain tissue fluid, they diffuse a. throu h endothelial membrane pores Jim/V; _,r-r:;\_ v z ii cri‘fl l gt 1- l, ependymal cells roligodendrocytes Mun ,«W W /5. Cerebrospinal fluid is synthesized mainly in the a. inal cord b rain stem . cerebral ventricles ‘ cerebelli ‘r 6. The muscle intercapillary pores allow ,a’. glucose b. amino acids I c. b a and b / neither a nor b to diffuse through real cortex (6% fi \or (i Q (or if, )C . the same for all a, b and c /8V Which of t e following nerves innervate the upper extremities? ical nerves oracic nerves i umbar nerves d, cranial nerves / 9. The soma of the primary pain fiber is located in the a. d rsal spinal horn ,K entral spinal horn { ‘ ' 3‘ VI "Tgx\( ventral spinal root ganglion; dorsal spinal root ganglion JlOi The ventral root nerve fibers transmit a. ensory impulses motor impulses . both a and b d. neither a nor b «/1 1. Which i‘the following tracts is a descending tract? at yramidal tract .“spinothalamic tract ~ ! .f‘ erthalarnocortical tract " do none of the above ~/12i The forebrain is made-up of the a. c rebellum and cerebrum b. ypothalamus and thalamus cerebrum and diencephalon . none of the above 43. The brain iem includes the a. c ebellum ons -, ' u ;' :- y ' i .othaandb "H1 w l" " d. neither a nor b . neither a nor b \/ 15. The dorsal column fibers carry pre ise touch and pressure senses rapidly ibft perature sense rapidly .’ ain sense slowly ’“d/ all of the above J16 The ventral spinal horn neurons transmit . mu 1e senses scle motor impulses Vqfih M moi DY V, p ecise touch sense . all of the above 17‘ Which of the following neurons carry impulses directly to skeletal muscle fibers? a. alpha motor neurons b. uppe motor neuron ct c ebellar motor neurons both b and c t 18, The impu es for fine body movements are transmitted through the .' pyramidal tract 0. dorsal column tract dd none of the above d. all of the above 20. The dam e in the left cerebellum results in ,(l ck of muscle coordination in the lefi side of the body muscles _ qck of muscle coordination in the right side of the body muscles . paralysis of the lefi side body muscles (1. paralysis of the right side body muscle /\ ary motor cortex is located in the a. anterior frontal lobe precentral gyrus c. postcentral gyrus d. temporal lobe 22. The right cerebrum is more specialized for spe a1 perception » y \ “a nguage rig-‘9 : “ij both a and b d. neither a norb \fl \‘V'galfl 3‘3 ‘ 23‘ The region of the brain that plays most important role in integrating neural and endocrine functions is t J a. c ebral cortex ypothalamus hU (NH 2mg} 3 : wt, 1,1? 1,14,»! «3 W ’ 1 1 {a \ r” .basal ganglia J ‘ ' " E .1, f“ (1. none of the above 24. The hypothalamus controls a, h ger and thirst b. ermoregulation .f both a and b d. neither a nor b 25 The pupillary light reflex is regulated by the a, V‘ ual cortex Merior colliculum e, inferior colliculum d. all of the above 26, Which of the following is involved in the development of a motor program? a submotor cortex b. p motor cortex ontal association cortex /\ (1 both a and b k/ 27. The vast majority of pyramidal impulses decussate at the level of a. lower spinal cord 7 b. u er spinal cord l , .4 edulla $8“. cf pxpflg’wéfifi r thalamus 28. Parkinso ’5 disease is associated with a. lo acetylcholine in basal ganglia It ow dopamine in the basal ganglia cl high dopamine in the basal ganglia (1. none of the above 29. Damage to the cerebellum will lead to inability to \ a. plan a movement accurately b. generate fine rapid movements both a and b . neither a nor b 30. Which of the following brain areas plays the most important role in language compreh sion? roca’s area ' Ste-QC t. h V primary auditory cortex ch Wernicke’s area /d( primary visual cortex 31. Musc e tone is . enhances by cerebellar activities inhibited by basal ganglia activities 0. both a and b d. neither a nor b 32‘ Alzheimer’s disease is associated with a. degenerated cholinergic neurons J b. neuroflbrillary tangles \/ ©both a and b . neither a nor b 33. The Parkinson’s symptoms include a, action tremor b. muscle rigidity goth a and b . neither a nor b 34. Th type of sensory receptor that detects deep touch is Pacinian corpuscle i Merkel’s disks 0. muscle spindle db none of the above 35. Free nerve nding detect ymell substance d/oxygen 37. The process that energy received by the sensory receptor is converted to membrane potential . ~=—-— change is cal ed sensory lification Insduction c. ; neration d. none of the above (41“ij 3M5} ~ 38, The thalamus relays N90 ll aivisua signals/ V . ( t -. \ , V mot r signals ' x ; if x x r J ,; Jngfiujgl“, “L 31"; -?,_ of the adequate stimulus. . both a and b d, neither a nor b 41. Activa ion of the sympathetic nervous system @ nduces pupil dilation allow eyes to focus on the near abject i both a and b d. neither a nor b A36 42. The circular muscles of iris are activated to contract by a. sylnpathetic impulses @ rasympathetic impulses . somatic impulses d. all of the above 43. Which of the following retinal cells can generate action potentials? a. cone b. b‘ olar cell ‘ A ‘ Xv q , anglion cell QM (Ll-Vt M 1. 30m A ,r 5’\ r i‘ t . all of the above I 44. In dark, rods are relatively inducing by sodium channels. [ydepolarized : opening of some M depolarized : closing of all c. hypepolarized : opening of some / \ XBSBBJarWizsd 2 dyslexia!“ 45. Cones function in . detailed image perception \/ color perception goth a and b d. neither 21 nor b 46. The axonal terminal of ganglion cells synapse with neurons in the a. retina bipolar cells \/® lateral geniculate cells c. visual cortical cells d. none of the above 47. In the optic chiasm, % of optic nerve fibers decussate. a. O b. 20 ($50 . 75 48. The first step in photochemical reaction that converts rhodopsin to prelumirhodopsin takes approximately a. 0.1 second b. 0.001 second i c. 0.00001 second less than 0.0000001 second a.g glion cells ~— 1{»,' ipolarcells' g) ,1, H A H (H, a, 4' tin , " r , both a and b V either a nor b 49. For light tyswo sensory receptors, light must passes through the layer of 50. In response to light, rods @ hyperpolarizes and releases less transmitter _ hyperpolarizes and releases more transmitter ‘ , depolarizes and releases more transmitter {depolarizes and releases less transmitter 51. Each skeletal muscle fiber is innervated by a. ne somatic motor neuron and one autonomic neuron b. multiple somatic motor neurons single somatic motor neuron (1. multiple somatic motor neurons and multiple autonomic neurons 52. The neurotransmitter released by the lower motor neuron to a skeletal muscle fl nicotinic receptors to depolarize muscle membrane m . nicotinic receptors to hyperpolarize muscle membrane l adrenergic receptors to depolarize muscle membrane fladrenergic receptors to hyperpolarize muscle membrane ber acts on 53, Degeneration of lower motor neurons results in ('9 paralysis of the innervated muscle fibers V weakness of the innervated muscle fibers 6. tremor of the innervated muscles dl none of the above 54. The neural circuits for rh spinal cord b. cerebellum c. cerebral primary motor cortex d. premotor cortex ythmic movements such as walking are established in the 55. Which of the following serves as the highest motor level? a. primary motor cortex bl ubmotor cortex \ thalamus / do spinal cord 56‘ Sweatin is regulated by sy pathetic impulses . arasympathetic impulses c, both a and b d. neither 3 nor b . . . . . ’ ympathenc d1v1510n1ncreases - 3 ‘ F y . parasympathetic division increases ~ {63+ or both a and b d. neither a nor b 57‘ When Syhe body is stressed, activity in the 58. The soma of the sympathetic preganglionic neurons are located in the a. autonomic ganglia pinal cord ‘. rain stem / d. all of the above ' 59, The adrenal medulla cells are innervated by a. sympathetic preganglionic fibers NE ll 5 lfle'o‘scdl sympathetic postganglionic fibers 3 m {fig “‘30 n \\ (“MCI fl parasympathetic preganglionic fibers \l P a / l d. parasympathetic postganglionic fibers 60, The saliva secretion is regulated by parasympathetic and sympathetic @ antaonistically b. complementarin / c. coorperatively l l (1. none of the above 61‘ To increase cardiac pumping efficiency, I _.‘_ _ r » 3’ r a. ympathetic activity needs to increase x,‘ l ‘ 5‘ l" I n l “‘ l" " l l ' . parasympathetic activity needs to decrease \ @0th a and b d, neither 21 nor b 62. When sympathetic activity increases, the amount of blood flow to the a. skeletal muscle increases b. intestine decreases ~ Y o 2K abothaandb W W 0/ ® neither a nor b 63. Near thee c‘ of postganglionic autonomic axon, transmitter is released from a. the ingle terminal 4 ltiple varicosities . ntire axon d. none of the above / /‘ 64. Activ tion of alpha adrenergic receptors induces Vasoconstriction in intestine . vasodilation in intestine .efvasodilation in cardiac muscle (1. none of the above (I. 0% 67. The fov of the retina ains the highest density of «reds C bit-‘5). : rves to detect most precise images . both a and b d. neither a nor b / \ . neither a nor b 70. Which of the following autonomic nerves regulates the vast majority of internal organs? a. I ranial nerve cranial nerve . 4 spinal nerve d. 82 spinal nerve 71. Compared to the each efferent impulse in the somatic nervous system, the each autonomic efferent fibe ’ ropagates impulse to the target cells more rapidly . . propagates impulses to more target cells c. both a and b d. neither 3 nor b 65. The ganglion cells of the retina synapse with neurons in the to the ’ . a. bi olar cells : lateral geniculate germ geniculate ; primary visual cortex . bipolar cells ; cone cells (21/ primary visual cortex : visual association cortex that transmit signals 66. How many percent of visual impulses which reached the left lateral genuculate are relayed to the right vi a1 cortex? a erves to detect most precise images . both a and b d neither 3 nor b 67. The fov of the retina ains the highest density of «reds (‘ l3th 3 / \ . neither a nor b 70. Which of the following autonomic nerves regulates the vast majority of internal organs? a. I ranial nerve cranial nerve r 4 spinal nerve d. 82 spinal nerve , . propagates impulses to more target cells or both a and b d. neither a nor b 72. Norepinedhrine is the transmitter released by the a J, W « . 3, ‘ I a. sy , athetic preganglionic neurons Sfiwbequ-nfihb fi’ll ,1 , \J b p asympathetic postganglionic neurons c. 0th a and b neither 21 nor b ecretion increases as the activity increases. a ympathetic parasympathetic 0. both a and b d. neither a nor b 74‘ The reganglionic parasympathetic neurons emerge from the «a ' ‘ stem I, . ( ‘ spinal lumbar region i3} Lu 0 S fifi‘fi 0“ L both a and b . neither a nor b (pi (\CLQ. gufir (LL 75. The adr ’al medulla secretes in epinephrine and in norepinephrine. d.0;100 ...
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Exam 2 - {/3- PCB 3703 HUMAN PHYSIOLOGY I Fall ,2010 Second...

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