Cortex, Corticospinal Tract (Msq Drill 266)

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    If the lesion in the cerebral cortex is on the right the symptoms will be evident on which side?

    • Right
    • Left
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Cortex, Corticospinal Tract (Msq Drill 266) - Quiz
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  • 2. 

    Do patients with locked in syndrome retain any intellecutal capacity?

    • No, they retain none.

    • Yes, they retain all intellectual ability.

    Correct Answer
    A. Yes, they retain all intellectual ability.
  • 3. 

    Sensory neurons are ascending or descending?

    • Ascending

    • Descending

    Correct Answer
    A. Ascending
  • 4. 

    The corticospinal tract is a motor or sensory tract.

    • Motor

    • Sensory

    Correct Answer
    A. Motor
  • 5. 

    If a patient has damage to the cerebral cortex are their deficits ipsilateral or contralateral?

    • Ipsilateral

    • Contralateral

    Correct Answer
    A. Contralateral
  • 6. 

    The corticospinal tract transmits neurons that will ultimately elicit _______ muscle movments via the efferent second order motor neuron.

    • Voluntary

    • Involuntary

    Correct Answer
    A. Voluntary
  • 7. 

    As soon as you move out of the spinal cord you are in the:_

    • Central nervous system

    • Peripheral nervous system

    Correct Answer
    A. Peripheral nervous system
  • 8. 

    The upper motor neurons all come together in a funnel like structure known as the

    • Midbrain

    • Internal capsule

    • Primary motor cortex

    • Thalamus

    Correct Answer
    A. Internal capsule
  • 9. 
    What structure will you find in 4? - ProProfs

    What structure will you find in 4?

    • Pyrimidal tract

    • Medial corticospinal tract

    • Lateral corticospinal tract

    • Pyrimidal decussation

    Correct Answer
    A. Lateral corticospinal tract
  • 10. 

    A patient has a lesion of the corticospinal tract at C5, what side are the symptoms, ipsilateral or contralateral?

    • Ipsilateral

    • Contralateral

    Correct Answer
    A. Ipsilateral
    Explanation
    C5 is below the pyramidal deccusation.

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  • 11. 

    Which disease i.e. upper motor damage or lower motor neuron damage will you observe hyperreflexia? UMN - UPPER MOTOR NEURON LMN - LOWER MOTOR NEURON

    • UMN

    • LMN

    Correct Answer
    A. UMN
    Explanation
    This is because the cortex inhibits the reflex. When you lose the cortex, you lose that inhibition and thus the hyperreflexia.

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  • 12. 
    Name this structure:  B - ProProfs

    Name this structure:  B

    • Midbrain

    • Cerebellum

    • Pons

    • Medulla

    • Cerebrum

    Correct Answer
    A. Pons
  • 13. 

    The ________  is the doorway to the cortex.

    • Midbrain

    • Corticospinal tract

    • Thalamus

    • Pons

    • Cerebellum

    Correct Answer
    A. Thalamus
  • 14. 

    Does the thalamus have any nuclei in it?

    • No, no nuclei have been discovered in the thalamus.

    • Yes, there are 10s to 100s of nuclei.

    Correct Answer
    A. Yes, there are 10s to 100s of nuclei.
  • 15. 
    What type of fibers course in structure B? - ProProfs

    What type of fibers course in structure B?

    • Sensory

    • Motor

    Correct Answer
    A. Motor
  • 16. 

    The brainstem is made up of the pons, medulla and ________ .

    • Hindbrain

    • Cerebellum

    • Thalamus

    • Midbrain

    • Cortex

    Correct Answer
    A. Midbrain
  • 17. 

    The gray matter in cortex contains

    • Glial cells

    • Axons

    • Cell bodies

    • CSF

    Correct Answer
    A. Cell bodies
    Explanation
    The white matter has tracts or axons.

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  • 18. 

    Increased muscle tone, Priapism & muscle weakness are indicative of UMN or LMN damage?

    • UMN

    • LMN

    Correct Answer
    A. UMN
  • 19. 

    Will you continue to exhibit reflexes in lower motor neuron damage?

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    No reflexes will be present. The LMN is responsible for the reflex arc.

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  • 20. 

    Where does the corticospinal tract begin?

    • Parietal lobe

    • Precentral gyrus

    • Paracentral gyrus

    • Cerebrum

    • Corona radiata

    Correct Answer
    A. Precentral gyrus
    Explanation
    AKA primary motor cortex

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  • 21. 

    The pyramidal decusation is in the

    • Pons

    • Medulla

    • Midbrain

    • Cerebellum

    • Spinal cord

    Correct Answer
    A. Medulla
  • 22. 

    In the medulla the corticospinal tract will be found in the

    • Basis pontus

    • Pyramid

    • Inferior olive

    • Posterior limb

    Correct Answer
    A. Pyramid
  • 23. 

    All sensory information passes thru the thalamus except for the sense of __________ .

    • Sight

    • Touch

    • Smell

    • Hearing

    Correct Answer
    A. Smell
  • 24. 

    The ________________ is sometimes referred to as the little brain.

    • Cortex

    • Cerebellum

    • Cerebrum

    • Thalamus

    • Pons

    Correct Answer
    A. Cerebellum
  • 25. 

    Patients with "Thalamic Pain syndrome" will complain of intractible pain to the same side of the body or the opposite side of the body?

    • Same side

    • Opposite side

    Correct Answer
    A. Opposite side
  • 26. 

    Atrophy of muscles and fasciculations are observed in a patient with UMN or LMN disease?

    • UMN

    • LMN

    Correct Answer
    A. LMN
  • 27. 

    The __________ is found in the area in which the ascending spinal chord starts to widen and thicken.

    • Pons

    • Midbrain

    • Medulla

    • Cerebellum

    Correct Answer
    A. Medulla
  • 28. 

    Is the cortex involved in a typical reflex arc?

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    There is no corticol input. This is an involuntary, unconscious input from the sensory nerve into the spinal cord and straight back out to the muscle. There is no cortical input.

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  • 29. 

    Is the corticospinal tract myelinated at birth?

    • Yes

    • No

    Correct Answer
    A. No
  • 30. 

    A bilateral lesion to the brainstem, mostly the pons leads to a syndrome called _______ in which there is a complete loss of all motor activity.

    • Huntington's chorea

    • Multiple sclerosis

    • Locked in syndrome

    • Locked ot syndrome

    • Vegetative syndrome

    Correct Answer
    A. Locked in syndrome
  • 31. 

    Before entering the midbrain, upper motor neurons pass thru this funnel shaped structure. 

    • Caudate nucleus

    • Internal capsule

    • 4th ventricle

    • Pons

    Correct Answer
    A. Internal capsule
  • 32. 

    What is this syndrome?  Follows after acute damage to the spinal cord, Spinal cord functions below the lesion are depressed, ipsilateral lower motor neuron signs, lasts for about 24 hours, can be tested by anal reflex or bulbocarvenosus reflex.

    • Acute spinal syndrome

    • Spinal shock syndrome

    • Hemovolemic shock syndrome

    • Corticospinal shock syndrome

    Correct Answer
    A. Spinal shock syndrome
  • 33. 

    The femoral nerve is a motor nerve only. True or false?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    It has both sensory and motor neurons.

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  • 34. 

    Does this patient have spastic or flaccid paralysis?  Pt has no babisnki and has lower motor neuron damage.

    • Spastic paralysis

    • Flaccid paralysis

    Correct Answer
    A. Flaccid paralysis
    Explanation
    Lower motor neuron damage is synonymous with flaccid paralysis. Upper motor neuron damage will have a positive babinski.

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  • 35. 

    Patients with locked in syndrome may only retain the ability to _______ even though they have lost all other activity.

    • Smile

    • Smell

    • Blink

    • Wink

    • Talk

    Correct Answer
    A. Blink
  • 36. 

    The upper motor neuronms are topographically arranged. A lesion in the most lateral portion of the lateral corticospial tract would probably affect:

    • The lower extremity

    • The trunk

    • The head

    Correct Answer
    A. The lower extremity
    Explanation
    This applies to lesions in the cortex as well. It is important to check where the lesion is. If the lesion is on the lateral cortex, the patient will still have no babinski because no damage has occured at the lower extremity area.

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  • 37. 

    The lateral cortical spinal tract is in the _____ matter of the____________ .

    • White matter, spinal cord

    • Grey matter, spinal cord

    • Dorsal root ganglion

    • Medually pyramid

    Correct Answer
    A. White matter, spinal cord
  • 38. 

    Lower motor neurons begin in the:

    • Dorsal horn

    • Dorsal root ganglia

    • Lateral white matter

    • Ventral horn

    Correct Answer
    A. Ventral horn
  • 39. 

    From the cortex to the muscle how many neurons are involved?

    • 1

    • 2

    • 3

    Correct Answer
    A. 2
    Explanation
    Upper and lower motor neurons.

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  • 40. 

    The farther out on the limb the less the coordination is observed in UMN or LMN damage?

    • UMN

    • LMN

    Correct Answer
    A. UMN
  • 41. 

    Where do the lateral cortical tracts terminate?

    • To an interneuron

    • To a lower motor neuron

    • To a sensory neuron in the grey matter

    • To a muscle fiber

    Correct Answer
    A. To a lower motor neuron
  • 42. 
    Name the structure:- - ProProfs

    Name the structure:-

    • Pons

    • Medulla

    • Midbrain

    • Spinal cord

    Correct Answer
    A. Medulla
  • 43. 

    The thalamus sits on top of the ______________________.

    • Pons

    • Brainstem

    • Cerebellum

    • Hippocampus

    • 4th ventricle

    Correct Answer
    A. Brainstem
  • 44. 

    The corticospinal tract in the ________ is found in the basis pontus.

    • Pons

    • Midbrain

    • Medulla

    • Pyramid

    Correct Answer
    A. Pons
  • 45. 

    In ascertaining where the lesion is, if the reflexes are absent at a certain level, the damage will typically be:-

    • At that same level

    • Below that level

    • Above that level

    Correct Answer
    A. At that same level
  • 46. 
    What is structure A? - ProProfs

    What is structure A?

    • Cerebrum

    • Cerebral peduncle

    • Pons

    • Pyramid

    Correct Answer
    A. Cerebral peduncle
  • 47. 
    What is structure B? - ProProfs

    What is structure B?

    • Internal capsule

    • Thalamus

    • Midbrain

    • Cerebellum

    • Ceberal peduncle

    Correct Answer
    A. Thalamus
  • 48. 

    Does every tract decusate?

    • No, there are some that don't

    • Yes, every tract decussates but they don't all decusate at the same point.

    Correct Answer
    A. Yes, every tract decussates but they don't all decusate at the same point.
  • 49. 
    On which side is the upper motor neuron? Ipsilateral or contralateral. - ProProfs

    On which side is the upper motor neuron? Ipsilateral or contralateral.

    • Ipsilatera

    • Contralateral

    Correct Answer
    A. Contralateral

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  • Current Version
  • Jul 12, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 20, 2010
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