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Physiology Final > Neuro Quiz 2024 > Flashcards

Neuro Quiz 2024 Flashcards

1
Q

Based on the image, choose the area that, if damaged, would result in decreased conscious awareness of limb position and touch.

A

Area A

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2
Q

Based on the image, choose the area that contains fibers with the slowest speed of transmission.

A

Area D

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3
Q

Which receptor detects muscle stretch?

  • Pacinian corpuscle
  • Golgi tendon organ
  • Muscle spindle
  • Meissners Corpuscle
A

Muscle Spindle

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4
Q

Based on the image, what is being assessed in this patient

  • conscious propioception
  • Ataxia
  • Nociception
  • Subconscious Propioception
A

Conscious Propioception

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5
Q

Where would fibers containing somatic LMN axons be found?

Ventral root
Lateral horn
Dorsal horn
Dorsal root

A

ventral root

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6
Q

Which tract contains fibers that transmit subconscious proprioception?

  • Spinocerebellar tract
  • Reticulospinal tract
  • Gracile and cuneate fasciculi
  • Spinothalamic tract
A

Spinocerebellar tract

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7
Q

A dog has a head tilt, ataxia that results in listing to one side, and is leaning and bumping into objects on the same side. Which CNS structure most likely has a lesion?

  • Dorsal funiculus of the spinal cord
  • Cerebellum
  • Dorsal horn of the spinal cord
  • Vestibular system
A

Vestibular system

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8
Q

What fiber type would be the last one affected by spinal cord compression?

  • motor function
  • propioception
  • touch
  • nociception/pain
A

Nociception / pain

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9
Q

Which cell is the first order neuron (primary afferent neuron) of the visual pathway?

  • bipolar cell
  • chiasma ganglion cell
  • retinal pigmented epithelial cell
  • ganglion cell
A

bipolar cells

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10
Q

Which sensory receptor structure in the inner ear senses static equilibrium, such as is the patient standing up or lying down on its side?
- Macula saccule
- Crista Ampullaris
- Macula Lutea
- Macula Utricle

A

Macula Saccule

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11
Q

What conclusions can be made after observing an intact direct and consensual PLR in both eyes?

A
  • optic tract is intact
  • PNS componet of the oculomotor nerve is intact
  • optic nerves are intact
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12
Q

Which sensory organ is responsible for the detection of reproductive pheromones?

A

vomeronasal organs

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13
Q

Which sensors detect rotational head movement?

  • bipolar vestibular neurons
  • Macula
  • Crista Ampullaris
  • Semicircular canals
  • Bipolar cochlear neurons
A

Crista ampullaris
Semicircular canals

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14
Q

What type of reflex is elicited by striking the biceps tendon to elicit a biceps contraction?

A

monosynpatic

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15
Q

Which segment of the brain is responsible for coordination of movement, skeletal muscle tone, and balance by inputs from proprioceptive and vestibular systems and outputs to brainstem motor centers?

A

cerebellum

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16
Q

A dog shows no quadriceps reflex of the right thoracic limb. However, the affected limb shows normal perception of all sensory modalities. Where is the lesion most likely to be?

A

right ventral horn

17
Q

Which statement is true about motor neuron disease?

  • UMN disease may present with hyporeflexia because descending tracts are interrupted
  • LMN disease may present with hypotonia hyporeflexia
  • With UMN disease, spinal reflexes may still be present
  • With UMN disease, local central pattern generators cannot operate
A

With UMN disease, spinal reflexes may still be present

18
Q

What motor tract?
Conscious motor control running from motor cortex directly to LMN

  • Corticospinal Tract
  • Rubrospinal Tract
  • Pontine Reticulospinal Tract
  • Vestubulospinal Tract
A

Corticospinal tract

19
Q

What motor tract?
Subconscious motor control running from brainstem contralaterally to LMN to modify concious motor actions

  • Corticospinal Tract
  • Rubrospinal Tract
  • Pontine Reticulospinal Tract
  • Vestubulospinal Tract
A

Rubrospinal tract

20
Q

What motor tract?
Subconcious motor control running ipsilateral from brainsteam nuceli to LMN to stimulate extensor muscles in posture

  • Corticospinal Tract
  • Rubrospinal Tract
  • Pontine Reticulospinal Tract
  • Vestubulospinal Tract
A

Pontine reticulospinal tract

21
Q

What motor tract?
Subconscious motor running ipsilateral from brainstem nuceli to LMN to stimulate extensor muscles to maintain muscles in posture

  • Corticospinal Tract
  • Rubrospinal Tract
  • Pontine Reticulospinal Tract
  • Vestubulospinal Tract
A

Vestibulospinal tract

22
Q

What is the sensory mechanism for the semicircular canals?

  • Perilymph of the cochlear duct
  • bipolar vestibular neurons
  • Otoliths of the macula
  • Hair cells of the crista ampullaris
A

Hair Cells of the crista ampullaris

Physiology Final (21 decks)

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