Cranial Nerves (2) Flashcards by Ahmed Farag

Q

A

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Q

Motor Portion of Trigeminal Nerve

A

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Q

Sensory Portion of Trigeminal Nerve

A

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Q

Sensory Portion of Trigeminal Nerve

Ophthalmic Division

A

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Q

Sensory Portion of Trigeminal Nerve

Maxillary Division

A

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Q

Sensory Portion of Trigeminal Nerve

Mandibular Division

A

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Q

Lesion in Trigeminal Nerve

sensory

A

Peripheral & Central

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Q

Lesion in Trigeminal Nerve

A

Sensory
Motor
Reflexes

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Q

Lesion in Trigeminal Nerve

sensory Peripheral Lesion

A

Loss of sensations on the same side of the face (sparing the angle of the angle of the mandible).
Loss of general sensations over the anterior 2/3 s of the tongue, (in lesions of the mandibular division).

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Q

Lesion in Trigeminal Nerve

Motor Lesion

A

Weakness of the muscles of mastication on the same side of the lesion.
Deviation of the jaw to the affected side due to the unopposed action of the pterygoid muscles of the healthy Side

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Q

Lesion in Trigeminal Nerve

Sensory Central Lesion

A

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Q

Lesion in Trigeminal Nerve

Reflexes Affected

A

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Q

Def of Trigeminal Neuralgia

A

Severe attacks of pain along one or more of the sensory branches of the trigeminal nerve, usually the maxillary or mandibular.

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Q

Etiology of Trigeminal Neuralgia

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Q

CP of Trigeminal Neuralgia

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Q

CP of Trigeminal Neuralgia

Site & reference

A

One or more branches of the TN (usually the maxillary or mandibular).
Pain is unilateral (rarely bilateral).

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Q

CP of Trigeminal Neuralgia

characters & Duration

A

Severe agonizing: stabbing, burning, electric shocks.
Several seconds to several minutes (rarely hours or even longer).
Recurrent: but the patient is completely free in between the attacks.

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Q

CP of Trigeminal Neuralgia

PPT by

A

Movements of the jaw: e.g. laughing & mastication.

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Q

CP of Trigeminal Neuralgia

Relieved By

A

Spontaneously, or by potent analgesics.

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Q

CP of Trigeminal Neuralgia

Associated Symptoms

A

Pain → brief muscle spasm of the facial muscles → tic.

Q

TTT of Trigeminal Neuralgia

A

Q

DDx of Facial Pain

A

Q

Motor Portion of Facial Nerve

A

Q

Sensory Portion of Facial Nerve

A

The Motor Part of **Facial Nerve** Supplies?

1) Muscles of facial expression. 2) Platysma. 3) Stylohyoid. 4) Stapedius. 5) PoSterior belly of digastric muscle.

The Sensory Part of **Facial Nerve** Supplies?

The Sensory Part of **Facial Nerve** Supplies? - Parasympathetic Fibers

to submaxillary, sublingual, and lacrimal glands.

The Sensory Part of **Facial Nerve** Supplies? - Taste fibers

from the anterior 2/3 of the tongue.

The Sensory Part of **Facial Nerve** Supplies? - Proprioception sesnations

from the muscles.

**Lesions in The Facial Nerve**

- Central - - Peripheral

Causes of Lesions in The Facial Nerve - Central Facial Paralysis

Causes of Central Lesions in The Facial Nerve - Traumatic

Cerebral laceration or intracerebral hemorrhage

Causes of Central Lesions in The Facial Nerve - Infective

Encephalitis

Causes of Central Lesions in The Facial Nerve - Neoplasm

Meningioma, Glioma

Causes of Central Lesions in The Facial Nerve - Vascular

Thrombotic, embolic, or hemorrhagic.

Causes of Central Lesions in The Facial Nerve - demylinating

MS - ADEM

Causes of Central Lesions in The Facial Nerve - degenerative

M.N.D. (pseudo bulbar palsy).

Causes of Lesions in The Facial Nerve - Peripheral

- Nuclear lesions in the pons - Infra-nuclear lesions cerebello-pontine angle - Infra-nuclear lesions in the in the facial canal

Causes of **Peripheral Facial Paralysis**

Causes of **Peripheral Facial Paralysis** - Nuclear Lesions in Pons

1. Infective: Poliomyelitis, encephalitis, tuberculoma. 2. Neoplasm: Astrocytoma 3. Vascular: Foville's neurinoma. 4. Demyelinating: M.S.

Causes of **Peripheral Facial Paralysis** - **Infra-nuclear lesions in the cerebello-pontine angle**

1. Acoustic neurinoma. 2. Cerebello- pontine angle: meningioma, ependymoma, or congenital aneurysm 3. Glioma of brain stem or cerebellum syndrome invading the cerebello-pontine angle 4. Cystic arachnoiditis. 5. Basal meningitis

Causes of **Peripheral Facial Paralysis** - Infra-Nuclear Lesions in the facial Canal

1. Middle ear disease. 2. Bell's palsy. 3. Facial nerve neuroma

CP of **Central Facial Paralysis**

CP of **Peripheral Facial Paralysis**

DIfference between UMNL & LMNL in Facial Paralysis

DIfference between UMNL & LMNL in Facial Paralysis - Areas

DIfference between UMNL & LMNL in Facial Paralysis - Type of movemnets

DIfference between UMNL & LMNL in Facial Paralysis - Side