Visceral Reflexes Flashcards

1
Q

What are the six visceral reflexes?

A
  1. pupillary light reflex
  2. Accommodation reflex
  3. ciliospinal reflex
  4. oculocardiac reflex
  5. carotid sinus reflex
  6. bulbocavernosus reflex
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2
Q

What is the afferent and efferent CN’s associated with the pupillary light reflex?

A

Afferent: CN ll

Efferent: CN lll

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3
Q

What CN does accommodation reflex test?

A

CN lll

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4
Q

What is the afferent and efferent segmental levels associated with the ciliospinal reflex?

A

Afferent: cervicals and CN V

Efferent: Cervical sympathetics

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5
Q

What is a negative response the the ciliospinal reflex (meaning what is suppose to happen)?

A

Dilation of the pupil on the painful side of stimulation

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6
Q

What is a positive response to the ciliospinal reflex?

A

abscence of pupil dilation on painful side meaning there may be a lesion of the cervical sympathetics

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7
Q

If a positive ciliospinal reflex is elicited what should be done next b (y you the doctor?

A

take a P-A & Lateral chest film to look for pan coast tumor

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8
Q

What is the most common cause of compression on the cervical sympathetics?

A

pan coast tumor

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9
Q

What two visceral reflexes are used in hypertensive crisis’?

A
  1. Oculocardiac reflex
  2. carotid sinus reflex
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10
Q

What are the afferent and efferent CN’s associated with oculocardiac reflex?

A

Afferent: CN V

Efferent: CN X

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11
Q

What is the response the patient experiences to the oculocardiac reflex?

A

decrease in HR and a fall in BP

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12
Q

What are the afferent and efferent

A
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13
Q

What are the afferent and efferent CN’s associated with Carotid sinus reflex?

A

Afferent: CN lX

Efferent: CN X

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14
Q

What is the response to carotid sinus reflex?

A

decrease in HR and fall in BP

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15
Q

Is the carotid sinus reflex performed unilaterally or bilateral?

A

either

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16
Q

Of the two visceral reflexes that are used in hypertensive crisis’ which is used more often (MC)?

A

Carotid sinus reflex

17
Q

What is the segmental level tested with the bulbocavernosus reflex?

A

S3-S4

18
Q

How do you perform the bulbocavernosus reflex?

A

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

19
Q

What are the elicited responses to the bulbocavernosus reflex?

A
  1. contraction of the bulbocavernosus muscle
  2. urethral constriction
  3. contraction of the external anal sphincter
20
Q
A