Neuro Quiz 2024 Flashcards
Based on the image, choose the area that, if damaged, would result in decreased conscious awareness of limb position and touch.
Area A
Based on the image, choose the area that contains fibers with the slowest speed of transmission.
Area D
Which receptor detects muscle stretch?
- Pacinian corpuscle
- Golgi tendon organ
- Muscle spindle
- Meissners Corpuscle
Muscle Spindle
Based on the image, what is being assessed in this patient
- conscious propioception
- Ataxia
- Nociception
- Subconscious Propioception
Conscious Propioception
Where would fibers containing somatic LMN axons be found?
Ventral root
Lateral horn
Dorsal horn
Dorsal root
ventral root
Which tract contains fibers that transmit subconscious proprioception?
- Spinocerebellar tract
- Reticulospinal tract
- Gracile and cuneate fasciculi
- Spinothalamic tract
Spinocerebellar tract
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
Vestibular system
What fiber type would be the last one affected by spinal cord compression?
- motor function
- propioception
- touch
- nociception/pain
Nociception / pain
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
bipolar cells
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
Macula Saccule
What conclusions can be made after observing an intact direct and consensual PLR in both eyes?
- optic tract is intact
- PNS componet of the oculomotor nerve is intact
- optic nerves are intact
Which sensory organ is responsible for the detection of reproductive pheromones?
vomeronasal organs
Which sensors detect rotational head movement?
- bipolar vestibular neurons
- Macula
- Crista Ampullaris
- Semicircular canals
- Bipolar cochlear neurons
Crista ampullaris
Semicircular canals
What type of reflex is elicited by striking the biceps tendon to elicit a biceps contraction?
monosynpatic
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?
cerebellum
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?
right ventral horn
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
With UMN disease, spinal reflexes may still be present
What motor tract?
Conscious motor control running from motor cortex directly to LMN
- Corticospinal Tract
- Rubrospinal Tract
- Pontine Reticulospinal Tract
- Vestubulospinal Tract
Corticospinal tract
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
Rubrospinal tract
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
Pontine reticulospinal tract
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
Vestibulospinal tract
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
Hair Cells of the crista ampullaris