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NMS 1 > Visceral Reflexes > Flashcards

Visceral Reflexes Flashcards

1
Q

Pupillary Light Reflex

Segmental level

A

Afferent: CN II
Efferent: CN III

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2
Q

Pupillary Light Reflex

Procedure

A

Shine light into one eye watch for constriction of both eyes.

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3
Q

Pupillary Light Reflex

Response & Indications

A

Should see bilateral constriction. If not may be CN II or CN III lesion

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4
Q

Accommodation Reflex

Segmental level

A

CN III

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5
Q

Accommodation Refex

Procedure

A

Have patient look at finger 2 feet away, then follow it to ~6in away from nose then look away at far object

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6
Q

Accommodation Reflex

Response & Indications

A

Convergence of eyes constriction of pupils, lens thickening, CN III lesion

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7
Q

Ciliospinal Reflex

Segmental level

A

Afferent: cercials and CN V
Efferent: Cervical sympathetics

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8
Q

Ciliospinal Reflex

Procedure

A

Painful stimulus to skin of the neck

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9
Q

Ciliospinal Reflex

Response & Indications

A

Dilation of the pupil on the painful side of stimulation.

If absent, may be lesion of cervical sympathetics

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10
Q

Oculocardiac Reflex

Segmental level

A

Afferent: CN V
Efferent: CN X

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11
Q

Oculocardiac Reflex

Procedure

A

Thumb pressure on the eyeballs

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12
Q

Oculocardiac Reflex

Response & Indications

A

Decrease in heart rate

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13
Q

Carotid Sinus Reflex

Segmental level

A

Afferent: CN IX
Efferent: CN X

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14
Q

Carotid Sinus Reflex

Procedure

A

Pressure on the carotid sinus (unilateral or bilateral)

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15
Q

Carotid Sinus Reflex

Response & Indications

A

Decrease in heart rate and fall in blood pressure

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16
Q

Bulbocavernosus Reflex

Segmental Reflex

A

S3-S4

17
Q

Bulbocavernosus Reflex

Procedure

A

Stroke, prick, pinch the dorsum of the glans of the penis

18
Q

Bulbocavernosus Reflex

Response & Indications

A

Contraction of bulbocavernosus muscle and urethral constriction, and contraction of external anal sphincter.
Cauda equina syndrome

NMS 1 (8 decks)

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