Brain Stem (Boards and Beyond) Flashcards by Mappy Castro | Brainscape

Q

What is the functional anatomy of the midbrain?

A

spinathalamic tract- pain temp

medial lemniscus- propr./vibration

red nucleus- fine tune

MLF- lateral gaze

cerebral peduncle- motor

Corticospinal tract-UMN

carticobulbar tract-UMN

cerebral aqueduct

oculomotor nerve

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Q

Oculomotor palsy

Temor Ataxia

contralateral loss propr./vubration

A

CN3 (ocular motor)

medial lemniscus (Prop/vibration)

red nuc. (tremor ataxia)

Benedikt Syndrome

Medial Midbrain

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Q

oculomotor palsy

contralateral hemiparesis ( weakness of one entire side of the body)

pseudobulbar palsy

A

CN3 (oculomotor)

Corticospinal tract (contralateral hemiparesis)

carticobulbar tract (pseudobulbar)

Weber’s Syndrome

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Q

Parinaud’s Syndrome

A

Posterior midbrain

Cannot look up (vertical gaze palsy)

Pseudo argyll robertson

pupil pinealoma (aqueduct obstruction)

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Q

What is the functional anatomy of the Pons?

A

Medial Lemniscus- prop./vibration

Corticospinal tract- hemiperises

MLF- lateral gaze

PPRF- lateral gaze

Spinothalamic Tract- pain temp

CN VIII CNVII CN VI

CN V nuc and spinal tract

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Q

contralateral hemiparesis (one side weakness)

Facial weekness/ drop

Lateral gaze palsy

A

Corticospinal tract (weakness)

CN7 (face weakness)

CN6, MFL, PPRF (lateral gaze pasly)

Medial Pontine Syndrome

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Q

Nystagmus

Vertigo

loss Contralateral pain/ temp

loss ipsilateral face pain

Horner Syndrome

ipsilateral facial droop

deafness

A

Vestibular nuc (nystagmus)

spinothalamic, (pain and temp)

spinal nuc CN5 (face pain)

Sympatheric tract (Horner)

Lateral Pontine Syndrome

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Q

Cause of a Lateral Pontine Syndrome

A

AICA stroke

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Q

What is the functional anatomy of the Medulla?

A

Nuc Solitarius

Dorsal Motor Nuc CNX

Nuc Anbiguus

Medial Lemniscus

Pyramids (corticospinal)

Inferior Olivary Nuc

Spinothalamic Tract

Hypothalamospinal Tract

Vestibular Nuclei

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Q

Contralateral hemiparesis

contralateral loss of prop./vibration

Deviation of tongue

A

Corticospinal (one sided weakness)

Medial Lemniscus (prop./ vibration)

CN12 (tongue deviation)

Medial Medullary Syndrome

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Q

Cause of a medial medullary syndrome

A

anterior spinal artery stroke ASA

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Q

Nystagmus

Vertigo

loss Contralateral pain/ temp

loss ipsilateral face pain/ temp

Horner Syndrome

Hoarseness, Dysphagia

A

Vesibular nuc (nystagmus)

sympathetic tract (Horner)

spinothalamic (pain/ temp)

spinal CNV nuc (face pain)

Nuc. Ambiguus CN IX, X (hoarseness and dysphagia)

Lateral Medullary Syndrome Wallenberg’s

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Q

Cause of a lateral Medullary syndrome

A

PICA stroke

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Q

Lateral Midbrain Stroke

A

PCA

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Q

Medial Midbrain Stoke

A

PCA

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Q

Medial Pons Stroke

A

Basilar