Crainal Nerves Flashcards

1
Q

1

A

Olefactory

Cribform plate of ethmoid

Sensory

Sense of smell. Assess each nostril separately.

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2
Q

2

A

Optic

Optic Canal

Sensory

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3
Q

3

A

Oculomotor

Superior Orbital Fissure

Motor

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4
Q

4

A

Trochlear

Superior Orbital Fissure

“H”

Motor: Superior Oblique Muscle.

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5
Q

5

A

Trigeminal

V1 - Ophthalmic - sensory
V2 - Maxillary - sensory
V3 - Mandibular - sensory motor

V1 - Superior Orbital Fissure
V2 - Foramen Rotundum
V3 - Foramen Ovale

V1 - Scalp, forehead, nose
V2 - Cheeks, lower eyelid, nasal mucosa, upper lip, upper teeth, palate.
V3 -
S: Anterior 2/3 tongue, skin over mandible, Lower teeth. M: Muscles of mastication.

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6
Q

6

A

Abducens

Superior Orbital Fissure

Motor: Lateral Rectus

“H” points 2&5

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7
Q

7

A

Facial

Internal Auditory/Acoustic Meatus

Sensory: External Ear, taste anterior 2/3 tongue, hard and soft palate.
Motor: Muscles of facial expression, lacrimal, submandibular, sublingual gland and mucose gland of mouth and nose.

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8
Q

8

A

Acoustic or Vestibulocochlear

Internal Auditory Meatus

Sensory: Hearing and balance.

Tinnitus and loss of balance

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9
Q

9

A

Glossopharyngeal

Jugular Foramen

Sensory: Posterior 1/3 tongue, external and middle ear cavity, carotid body, sinus, taste posterior 1/3 tongue.
Motor: Parotid gland, stylopharynges.

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10
Q

10

A

Vagus

Jugular Foreman

Sensory: External ear, larynx, pharynx, taste epiglottis of tongue.
Motor: Smooth muscles pharynx and larynx.

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11
Q

11

A

Spinal Accessory

Jugular Foramen

Motor: Trapezius, SCM.

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12
Q

12

A

Hypoglossal

Hypoglossal Canal

Motor: Intrinsic and extrinsic tongue muscles.

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13
Q

What are Cranial Nerves?

A

Components of the peripheral nervous system that connect to the brain (not the spinal cord). Numbered according to their position along the longitudinal axis of the brain, beginning at the CEREBRUM.
Motor nuclei of these nerves lie in the brain stem of the Mid-Brain, Pons and Medulla. They are acted upon by nerve impulses from various sources.
Can be sensory, motor or mixed.
Swelling or bleeding within the meninges or brain can shift the brain and compress the openings.

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