ch 11 (EXAM 4)

25. The person most credited with mapping the human motor cortex was: A) Gustave Fritsch. B) Eduard Hitzig. C) Roberts Bartholow. D) Wilder Penfield.

Wilder Penfield.

99. The inability to accurately complete a plan of motor action is called: A) ataxia. B) aphasia. C) apraxia. D) acalcula.

apraxia.

28. The sensory and motor cortices are: A) stable neocortical areas that are fixed in function after birth. B) stable neocortical areas that are fixed in function after puberty. C) changed only in response to damage. D) continuously modified with learning and experience.

continuously modified with learning and experience.

26. Which of the following sequences is in the correct order from largest to smallest representation in the motor homunculus? A) feet, hands, lips B) hands, feet, lips C) hands, lips, feet D) lips, feet, hands

hands, lips, feet

19. Injury to level L1-L2 of the spinal cord would likely result in: A) paraplegia. B) quadriplegia. C) hemiplegia. D) numbness in the legs.

hemiplegia.

96. Damage to the primary somatosensory motor cortex results in:A) impaired sensory discrimination on the ipsilateral side. B) impaired sensory discrimination on the contralateral side. C) impaired sensory discrimination on both sides. D) no impairment of sensory discrimination.

impaired sensory discrimination on the contralateral side.

62. The motor system sends a copy of the "instructions" for a movement to the cerebellum via the: A) inferior olive. B) superior olive. C) basal ganglia. D) thalamus.

inferior olive.

35. The limb regions of the motor homunculus are involved in activating motor neurons that move the arms, hands, and legs primarily on the ______, and the trunk regions of the motor homunculus are mainly involved in activating motor neurons that move the trunk primarily on the ______. A) same side of the body; opposite side of the body B) opposite side of the body; same side of the body C) same side of the body; same side of the body D) opposite side of the body; opposite side of the body

opposite side of the body; same side of the body

69. Nociception is the perception of: A) fine touch. B) the location of one's body in space. C) pain. D) noise.

pain.

4. The ventral side of the spinal cord ______, whereas the dorsal portion ______. A) relays motor signals; relays sensory signals B) relays sensory signals; relays motor signals C) controls reflexive movements; controls intentional movements D) controls balance; controls walking

relays motor signals; relays sensory signals

95. Neurons in area 3b of the primary somatosensory cortex are responsive to: A) muscle sense. B) slow-responding skin receptors. C) fast-responding skin receptors. D) pressure.

slow-responding skin receptors.

6. Signals from motor cortex to the spinal cord are transmitted via cortical layer(s): A) 1 to 3 B) 2 to 4 C) 4 D) 5 to 6

5 to 6

41. Which region(s) of the cortex project to the basal ganglia? A) the frontal cortex B) the temporal cortex C) the parietal cortex D) All areas of the cortex project to the basal ganglia.

All areas of the cortex project to the basal ganglia.

20. The spinal cord functions in: A) conveying sensory and motor information between the brain and body. B) reflexive behaviors. C) walking. D) All of the answers are correct.

All of the answers are correct.

29. Neurons in the primary motor cortex: A) start to discharge just prior to a movement. B) discharge during a movement. C) increase their rate of firing if a weight is added to the movement apparatus. D) All of the answers are correct.

All of the answers are correct.

30. Motor cortex is activated when a person: A) plans a movement. B) imagines making a movement. C) executes a movement. D) All of the answers are correct.

All of the answers are correct.

50. _____ are commonly used as a treatment for Tourette's syndrome. A) SSRIs B) Antipsychotics C) Both SSRIs and antipsychotics D) MAO inhibitors

Antipsychotics

38. ______ muscles move the limb away from the trunk, whereas ______ muscles move the limb back toward the trunk. A) Extensor; flexor B) Flexor; extensor C) Dorsal; ventral D) Medial; lateral

Extensor; flexor

64. ______ skin is much more richly endowed with receptors and is exquisitely more sensitive to a wider range of stimuli than ______ skin. A) Glabrous; hairy B) Smooth; glabrous C) Smooth; hairy D) Hairy; glabrous

Glabrous; hairy

21. The first direct evidence that the cortex controls movement was provided by: A) Wilder Penfield. B) Paul Broca. C) Gustav Fritsch and Eduard Hitzig. D) John Hughlings-Jackson.

Gustav Fritsch and Eduard Hitzig.

74. Which of the following receptors are rapidly adapting receptors?. A) Meissner corpuscles B) Pacinian corpuscles C) Ruffini corpuscles D) All of these are rapidly accepting receptors

Meissner corpuscles Pacinian corpuscles Ruffini corpuscles All of these are rapidly accepting receptors

75. Which of the following receptors are slowly adapting receptors? A) Meissner corpuscles B) Merkel receptors C) Ruffini corpuscles D) Pacinian corpuscles

Merkel receptors

67. Vibration is detected by: A) Pacinian corpuscles. B) Merkel receptors. C) Ruffini corpuscles D) Meissner corpuscles.

Merkel receptors.

68. ______ are critical for proprioception. A) Muscle spindles B) Golgi tendon organs C) Joint receptors D) All of the answers are correct.

Muscle spindles Golgi tendon organs Joint receptors (All of the answers are correct.)

58. ______ are the primary output cells of the cerebellum. A) Purkinje cells B) Basket cells C) Stellate cells D) Pyramidal cells

Purkinje cells

23. A homunculus is: A) a representation of the body in motor cortex. B) a representation of the body in sensory cortex. C) a representation of the body in sensory and motor cortex. D) a strange tiny person with large hands.

a representation of the body in sensory and motor cortex.

24. On the motor homunculus: A) all muscles are given equal representation. B) an inverse relation exists between space allocated on the homunculus and motor control. C) areas of precise motor control are given a larger representation. D) no clear relation exists between movement precision and the amount of area allocated on the motor cortex.

areas of precise motor control are given a larger representation.

59. A tumor or damage to the midline of the cerebellum seriously disrupts: A) balance. B) eye movements. C) upright posture. D) balance, eye movements, and upright posture.

balance, eye movements, and upright posture.

2. The ______ controls the force of a movement, whereas the ______ controls the timing and accuracy of the movement. A) using only your thoughts to control a computer keyboard. B) having electrical signals from an electronic device influence brain function. C) having your thoughts relayed to someone else's brain via a computer. D) None of the answers is correct.

basal ganglia; cerebellum

48. The ______ contributes to motor control by adjusting the forces associated with movements, while the ______ compares the intended movement with actual movement for the improvement of movement skill. A) motor cortex; cerebellum B) cerebellum; basal ganglia C) basal ganglia; motor cortex D) basal ganglia; cerebellum

basal ganglia; cerebellum

89. Action potentials in the semicircular canals are stimulated by: A) bending hair cells. B) the endolymph. C) the utricle and saccule. D) Pacinian corpuscles.

bending hair cells.

17. Damage to the brainstem can result in: A) locked-in syndrome. B) cerebral palsy. C) both locked-in syndrome and cerebral palsy. D) tardive dyskinesia.

both locked-in syndrome and cerebral palsy.

33. Neurons from the corticospinal tract synapse with: A) motor neurons. B) interneurons. C) sensory neurons. D) both motor neurons and interneurons.

both motor neurons and interneurons.

16. Locked-in syndrome can occur following damage to the: A) prefrontal cortex. B) brainstem. C) cerebellum. D) primary motor cortex.

brainstem.

53. Parkinson's disease can be treated by: A) lesioning the globus pallidus internal. B) lesioning the globus pallidus external. C) stimulating the globus pallidus internal. D) by either lesioning or stimulating the globus pallidus internal.

by either lesioning or stimulating the globus pallidus internal.

45. Damage to the ______ results in ______. A) substantia nigra; Huntington's disease B) caudate nucleus; Huntington's disease C) caudate nucleus; Parkinson's disease D) putamen; Parkinson's disease

caudate nucleus; Huntington's disease

5. The arms are controlled by motor neurons in ______ levels of the spinal cord, whereas the legs are controlled by motor neurons in ______ levels of the spinal cord. A) cervical; thoracic B) lumbar; sacral C) cervical; lumbar D) thoracic; lumbar

cervical; lumbar

91. Vestibular receptors convey information about: A) changes in the direction of movement. B) changes in the speed of movement. C) the position of one's body in relation to gravity. D) All of the answers are correct.

changes in the direction of movement. changes in the speed of movement. the position of one's body in relation to gravity. (All of the answers are correct.)

55. The flocculus of the cerebellum is involved with: A) control of balance and eye movements. B) control over the face and midline of the body. C) gross limb movements. D) fine finger and hand movements.

control of balance and eye movements.

27. Early research on the motor cortex suggested that it ______; however, more recent work suggests that the motor cortex may actually ______. A) controlled individual muscle movements; store a repertoire of movement categories B) stored a repertoire of movement categories; control individual muscle movements C) controlled only reflexive movements; control both reflexive and voluntary movement D) control only learned movements; control both learned and innate movements

controlled individual muscle movements; store a repertoire of movement categories

31. The major motor pathway that relays signals from the primary motor cortex to the spinal cord is the: A) rubrospinal tract. B) tectospinal tract. C) corticospinal tract. D) pontospinal tract.

corticospinal tract.

52. The globus pallidus is an internal component of the basal ganglia that is involved with: A) skilled motor movements. B) determining whether a movement will be weak or strong. C) species-specific behaviors. D) involuntary motor behaviors.

determining whether a movement will be weak or strong.

47. In the basal ganglia, excitation is to ______ as inhibition is to ______. A) putamen; globus pallidus B) direct pathway; indirect pathway C) indirect pathway; direct pathway D) subthalamic nucleus; thalamus

direct pathway; indirect pathway

77. The haptic and proprioceptive axons form the: A) dorsal spinothalamic tract. B) ventral spinothalamic tract. C) caudal spinothalamic tract. D) rostral spinothalamic tract.

dorsal spinothalamic tract.

78. Information from the ______ crosses to the other side of the brain in the brainstem, whereas the ______ crosses to the other side of the brain in the spinal cord. A) ventral spinothalamic tract; dorsal spinothalamic tract B) dorsal spinothalamic tract; ventral spinothalamic tract C) lateral spinothalamic tract; medial spinothalamic tract D) medial spinothalamic tract; medial spinothalamic tract

dorsal spinothalamic tract; ventral spinothalamic tract

76. Somatosensory information is carried from the body to the CNS by the: A) ventral-root ganglion neurons. B) dorsal-root ganglion neurons. C) gamma somatosensory neurons. D) corticospinal tract.

dorsal-root ganglion neurons.

54. Cellular recordings from the globus pallidus internal in patients with Parkinson's disease show: A) excessive activity. B) underactivity. C) no activity. D) intermittent spikes of activity.

excessive activity.

61. If a patient with cerebellar damage is asked to throw darts while wearing a pair of glasses that shift the vision to the right, the patient will most likely: A) learn to adjust movements leftward to compensate for the visual shift. B) begin throwing farther and farther to the right on successive throws. C) fail to show any adaptation to compensate for the visual shift. D) learn to adjust movements rightward to compensate for the visual shift.

fail to show any adaptation to compensate for the visual shift.

71. Hapsis is the perception of: A) fine touch. B) the location of one's body in space. C) pain. D) chemical irritants.

fine touch.

40. Which of the following is not a part of the basal ganglia? A) flocculus B) amygdala C) caudate D) putamen

flocculus

94. How many homunculi are present in the primary somatosensory cortex, according to the Kaas model? A) one B) three C) four D) five

four

66. Which of the following receptors is most responsive to pain and temperature? A) Pacinian corpuscles B) free nerve endings C) Golgi tendon organs D) dendrites of alpha motor neurons

free nerve endings

51. Brain imaging studies have noted decreased connectivity between ______ in patients with Tourette's syndrome. A) temporal cortex and frontal cortex B) frontal cortex and parietal cortex C) occipital cortex and parietal cortex D) None of these answers is correct.

frontal cortex and parietal cortex

3. Which part of the brain is responsible for planning and initiating movements? A) frontal lobe B) hippocampus C) basal ganglia D) cerebellum

frontal lobe

65. The ability to discriminate the distance between two points on the skin is most sensitive in: A) hairy skin. B) glabrous skin. C) smooth skin. D) epidermal skin.

glabrous skin.

98. In a study by Pons and colleagues, monkeys' arm nerves were cut, thereby depriving the somatosensory cortex of sensory input from the arm. Several years later, when the researchers mapped the monkeys' somatosensory homunculus, they discovered that the arm region of the homunculus: A) had expanded. B) was the same size it was previously. C) had been taken over by the face region. D) had been taken over by the foot region.

had been taken over by the face region.

84. According to the gate theory of pain transmission, activity in the ______ can inhibit the pain pathway in the spinal cord. A) motor cortex B) hepatic-proprioceptive pathway C) nocioceptive pathway D) corticospinal pathway

hepatic-proprioceptive pathway

100. The dorsal stream is the ______ stream, while the ventral stream is the ______ stream. A) what; how B) how; what C) where; how D) how; where

how; what

46. If cells of the caudate putamen are damaged, which one of the following motor disorders will be observed? A) hypokinetic behavior B) isokinetic behavior C) hydrokinetic behavior D) mesokinetic behavior

hypokinetic behavior

49. Which of the following is not associated with Tourette's syndrome? A) motor tics (e.g., hitting, jumping). B) unwanted cries and vocalizations. C) excessive levels of dopamine. D) hypokinetic symptoms.

hypokinetic symptoms.

90. Hair cells in the vestibular system fire more action potentials when the hair: A) is bent in a specific direction. B) vibrates at a specific frequency. C) is moved with a specific force. D) cells remain motionless.

is bent in a specific direction.

32. The ______ controls limbs and digits, whereas the ______ controls mainly trunk muscles. A) lateral corticospinal tract; ventral corticospinal tract B) ventral corticospinal tract; lateral corticospinal tract C) rubrospinal tract; lateral corticospinal tract D) lateral corticospinal tract; tectospinal tract

lateral corticospinal tract; ventral corticospinal tract

34. In the spinal cord, laterally located motor neurons project to the ______, whereas more medially located motor neurons project to the ______. A) trunk; limbs and digits B) limbs; trunk and feet C) arms; legs D) limbs and digits; trunk and shoulders

limbs and digits; trunk and shoulders

88. The vestibular system is in the: A) brainstem. B) spinal cord. C) motor cortex. D) middle ear.

middle ear.

13. Neurons that fire when we execute a movement and when we observe another person making the same movement are referred to as: A) visuomotor neurons. B) bimodal neurons. C) mirror neurons. D) multisensory neurons.

mirror neurons.

63. To which of the following systems is the somatosensory system most closely linked? A) visual B) auditory C) motor D) It is equally linked to visual, auditory, and motor systems.

motor

37. What constitutes the "final common path"? A) sensory neurons B) muscles C) motor neurons D) the corticospinal tract

motor neurons

82. When a physician taps the patellar tendon with a hammer, it causes a knee jerk reflex by sending stretch signals to: A) motor neurons in the spinal cord that cause muscles to contract. B) motor neurons in the cortex that cause muscles to contract. C) the thalamus, which sends signals to motor neurons to contract. D) the cerebellum, which sends signals to motor neurons to contract.

motor neurons in the spinal cord that cause muscles to contract.

56. The lateral parts of the cerebellar hemispheres control: A) movement of the body midline. B) movement of limbs and digits. C) eye movements. D) balance

movement of limbs and digits.

39. In all animals, a large proportion of the motor cortex is represented by: A) the tongue and paws or hands. B) the arms, legs, and other large muscle groups. C) no single area. There is equal representation of all muscles. D) muscles over which an animal has skilled and intricate control

muscles over which an animal has skilled and intricate control.

44. The neurotransmitter system that is most important for basal ganglia function is the: A) nigrostriatal dopamine system. B) mesolimbic dopamine system. C) acetylcholine system. D) norepinephrine system.

nigrostriatal dopamine system.

73. The three major classes of sensory receptors are: A) nociception, hapsis, proprioception. B) flocculoception, nociception, hapsis. C) stasisception, nociception, proprioception. D) flocculoception, nociception, proprioception.

nociception, hapsis, proprioception.

86. Stimulation of the ______ is effective in reducing pain. A) amygdala B) thalamus C) periaqueductal gray matter D) cerebellum

periaqueductal gray matter

7. The prefrontal cortex is responsible for: A) planning movements. B) organizing movement sequences. C) producing specific movements. D) inhibiting spontaneous movements.

planning movements.

92. The primary somatosensory cortex is found in the ______, while the secondary somatosensory cortex is located in the ______. A) precentral gyrus; postcentral gyrus B) parietal lobe; postcentral gyrus C) postcentral gyrus; parietal lobe D) precentral gyrus; parietal lobe

postcentral gyrus; parietal lobe

10. In a person performing a sequence of finger movements, cerebral blood flow increases in the: A) primary motor cortex. B) temporal cortex. C) premotor cortex. D) cingulate cortex.

premotor cortex.

11. The decision to set your alarm an hour early so as not to be late for your exam would be made in the: A) prefrontal cortex. B) primary motor cortex. C) premotor cortex. D) basal ganglia.

premotor cortex.

12. Coordinating multiple simultaneous movements to accomplish a goal is a function of the: A) primary motor cortex. B) premotor cortex. C) prefrontal cortex. D) cerebellum.

premotor cortex.

14. Mirror neurons are found in the: A) premotor cortex. B) parietal cortex. C) cerebellum. D) All of the answers are correct.

premotor cortex. parietal cortex. cerebellum. (All of the answers are correct.)

70. Pacinian corpuscles are most responsive to: A) movements of tendons. B) pain and temperature. C) pressure and flutter stimuli. D) movement of tendons and pressure.

pressure and flutter stimuli.

22. Wilder Penfield identified a motor homunculus in the: A) primary motor cortex. B) prefrontal cortex. C) premotor cortex. D) primary motor cortex and the premotor cortex.

primary motor cortex and the premotor cortex.

93. The homunculus on the primary somatosensory cortex is most similar to the homunculus found in the: A) primary motor cortex. B) secondary motor cortex. C) cerebellum. D) basal ganglia.

primary motor cortex.

15. Walter Hess's experiments reveal that one of the functions of the brainstem is to: A) regulate blood osmolarity. B) regulate breathing and heart rates. C) produce species-typical behavior. D) produce behavior common across all species.

produce species-typical behavior.

8. The premotor cortex is responsible for: A) planning movements. B) producing specific movements. C) producing movement sequences. D) inhibiting spontaneous movements.

producing movement sequences.

9. The primary motor cortex is responsible for: A) planning movements. B) organizing movement sequences. C) producing specific movements. D) inhibiting spontaneous movements.

producing specific movements.

18. Damage to level C1-C2 of the spinal cord would likely result in: A) paraplegia. B) quadriplegia. C) hemiplegia. D) numbness in the legs.

quadriplegia.

87. Pain in blood vessels and internal organs that is felt as pain at the body surface is known as: A) transferred pain. B) relocated pain. C) referred pain. D) transposed pain.

referred pain.

42. Which of the following is not part of the direct pathway of the basal ganglia? A) the caudate nucleus. B) the globus pallidus external. C) the globus pallidus internal. D) the putamen.

the globus pallidus external.

72. Proprioception is the perception of: A) fine touch. B) the location of one's body in space. C) pain. D) chemical irritants.

the location of one's body in space.

43. Which of the following structures is not part of the indirect pathway in the basal ganglia? A) the globus pallidus internal. B) the putamen. C) the caudate nucleus. D) the subthalamic nucleus.

the putamen.

97. Research has demonstrated that tickle perception is primarily due to: A) touch sensations. B) the predictability of the touch sensations. C) the unpredictability of the touch sensations. D) the laughter associated with tickling

the unpredictability of the touch sensations.

57. The cerebellum consists of _____ distinct layer(s). A) one B) two C) three D) six

three

60. The cerebellum's role in motor behavior is primarily involved with: A) timing of movements and maintaining movement accuracy. B) initiating movements and timing of movements. C) maintaining movement accuracy and initiating movements. D) All of the answers are correct.

timing of movements and maintaining movement accuracy.

81. Unilateral damage to the spinal cord will result in the loss of ______ on the same side of the body and loss of ______ on the opposite side of the body below the site of the damage. A) touch and proprioception; pain and temperature B) pain and temperature; touch and proprioception C) pain and touch; temperature and proprioception D) temperature and touch; pain and proprioception

touch and proprioception; pain and temperature

36. Neurons in the ventral corticospinal tract in the left hemisphere control ______ muscles on ______ of the body A) limb; the right side B) trunk; the right side C) trunk; both sides D) limb; both sides

trunk; both sides

83. Research has demonstrated that phantom limb pain can be alleviated through the use of: A) further amputation. B) destroying remaining nerves in the limb stump. C) using a mirror to fool the sensory system into perceiving the missing limb. D) All of the answers are correct.

using a mirror to fool the sensory system into perceiving the missing limb.

1. An example of a brain-computer interface (BCI) would be: A) using only your thoughts to control a computer keyboard. B) having electrical signals from an electronic device influence brain function. C) having your thoughts relayed to someone else's brain via a computer. D) None of the answers is correct.

using only your thoughts to control a computer keyboard.

79. Axons that carry information about pain and temperature form the: A) dorsal spinothalamic tract. B) ventral spinothalamic tract. C) caudal spinothalamic tract. D) rostral spinothalamic tract.

ventral spinothalamic tract.

80. Both the dorsal and ventral spinothalamic tracts send their signals to the ______ nucleus of the thalamus. A) ventrolateral B) ventromedial C) mediodorsal D) lateral geniculate

ventrolateral

85. The gate theory of pain can help explain: A) the existence of phantom limb pain. B) why rubbing an injury can reduce pain. C) why you feel more pain when you hurt your finger than you do when you hurt your leg. D) None of the answers is correct.

why rubbing an injury can reduce pain.