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Neuroanatomy: Motor 2

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1 Neuro (Neuroanatomy) Quiz on Neuroanatomy: Motor 2, created by Zoila Rojas on 25/03/2016.
Zoila Rojas
Quiz by Zoila Rojas, updated more than 1 year ago
Zoila Rojas
Created by Zoila Rojas about 8 years ago
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Resource summary

Question 1

Question
Which of these is not a principle function of the basal ganglia
Answer
  • termination of movement
  • initiation of movement
  • maintenance of movement
  • sequencing movement
  • correcting movement

Question 2

Question
The axons of 5B pyramidal cells projects to...
Answer
  • basal ganglia
  • regions of the brainstem
  • hypothalamus
  • ipsilateral cortex

Question 3

Question
Which of these is true about structure of basal ganglia?
Answer
  • The VA/VL thalamus has an excitatory effect on the medial globus pallidus
  • The subthalamic nucleus has an excitatory effect on lateral globus pallidus
  • the striatum has an inhibitory effect on lateral and external globus pallidus
  • the indirect loop is responsible for maintenance of a movement

Question 4

Question
The substantia nigra is inhibitory on striatum.
Answer
  • True
  • False

Question 5

Question
Striatum is responsible for initiating and maintaining motor action.
Answer
  • True
  • False

Question 6

Question
The outflow of the basal ganglia is the [blank_start]globus pallidus[blank_end].
Answer
  • globus pallidus

Question 7

Question
The basal ganglia is not involved with...
Answer
  • sequencing movements
  • perceptual habits
  • motor habits
  • movement adjustments

Question 8

Question
During the termination of movement, a rat has a radioactive substance injected into striatum. The animal is sacrificed (RIP) and autoradiography is performed on brain slices. Where would labelled cells be found?
Answer
  • lateral and medial globus pallidus
  • medial globus pallidus
  • lateral globus pallidus
  • subthalamic nucleus

Question 9

Question
HRP is injected into the VA/VL thalamus of a rat. The rat is sacrificed (RIP) and its brain is sliced and the basal ganglia is imaged. Where would the labelled cells be found?
Answer
  • lateral globus pallidus
  • internal globus pallidus
  • cerebral cortex
  • substantia nigra

Question 10

Question
Damage to striatum...
Answer
  • as in hungtington's results in chorea on the contralateral sides
  • unilaterally results in excessive motor activity on contralateral side
  • results in ballistic motor actions on the contralateral side
  • results in resting tremor

Question 11

Question
Which of these is true about the substantia nigra?
Answer
  • damage to the pars reticulata results in parkinson's like deficits
  • the internal globus pallidus excites the substantia nigra
  • damage to substantia nigra produces intention tremor
  • the substantia nigra has an inhibitory and excitatory effect on striatum

Question 12

Question
Which of these is not a result of damage to the substantia nigra?
Answer
  • chorea
  • ballistic motor movement
  • intention tremor
  • dysmetria
  • none of these are true

Question 13

Question
Parkinson's disease is a result of damage to doparminergic receptors on the striatum.
Answer
  • True
  • False

Question 14

Question
The subthalamic side loop and indirect loop have an inhibitory effect on motor output.
Answer
  • True
  • False

Question 15

Question
A rat with left hemiballismus has HRP injected into the affected internal globus pallidus. Which of these is true?
Answer
  • the right substantia nigra will be tagged
  • the right subthalamic nucleus will be tagged
  • the right striatum will be tagged
  • the rat will exhibit a resting tremor

Question 16

Question
The vestibular system and inferior olivary nuclei both send and receive information to and from the cerebellum.
Answer
  • True
  • False

Question 17

Question
Which of these does not receive information from the cerebellum?
Answer
  • inferior olivary nuclei
  • VL thalamus
  • vestibular system
  • red nucleus

Question 18

Question
A cut is made on the right superior cerebellar peduncle. Which of these would be true?
Answer
  • Axons from the left dentate nuclei would degenerate
  • axons from right VL thalamus to motor cortex would degenerate
  • axons going to the right red nucleus would degenerate
  • axons going to the left VL thalamus would degenerate

Question 19

Question
A radioactive substance is injected into the pontine nuclei of a rat. The rat is sacrificed (RIP) and brain slices are imaged. What structures would be tagged?
Answer
  • axons in ipsilateral middle cerebellar penduncle
  • axons in contralateral middle cerebellar peduncle
  • axons on ipsilateral motor cortex
  • axons on contralateral motor cortex

Question 20

Question
HRP is injected into the deep nuclei of the cerebellum of a rat. The rat is sacrificed (RIP) and brain slices are imaged. What structures would not be tagged?
Answer
  • spino-cebellar tract
  • inferior olivary nucleus
  • vestibular nuclei
  • pontine nuclei
  • red nucleus

Question 21

Question
The cerebellar cortex and deep nuclei receive information via the inferior cerebellar peduncle and middle cerebellar peduncle.
Answer
  • True
  • False

Question 22

Question
Niacin deficiency results in degeneration of what structure?
Answer
  • posterior lobe of cerebellum
  • anterior lobe of cerebellum
  • flocculonodular lobe of cerebellum

Question 23

Question
Which region of the cerebellum receives massive input from vestibular system?
Answer
  • flocculonodular lobe
  • vermis + intermediate zone
  • neocerebellar
  • deep nuclei

Question 24

Question
Loss of coordination in axial musculature may occur due to damage in the neocerebellum.
Answer
  • True
  • False

Question 25

Question
The functional zone that receives the greatest amount of information from the cerebral cortex is the [blank_start]neocerebellum[blank_end].
Answer
  • neocerebellum

Question 26

Question
The principal output component of the cerebellum are the deep nuclei.
Answer
  • True
  • False

Question 27

Question
Which of these is true about the basic circuit of the cerebellum?
Answer
  • Granular cells send output to the pontine nuclei and inferior olivary nuclei.
  • Purkinje cells send output to granular cells
  • Deep nuclei receive input from vestibular nuclei and spinocerebellar
  • the cerebellar cortex is facilitatory on the output of the deep nuclei
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