Matthew Shared "Neurology" - 97 Picmonics
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Neurology
Circle of Willis
- Characteristics
- Anterior Cerebral Artery (ACA) Supplies Motor/Sensory Parts of the Cortex for Lower Extremities
- Anterior Communicating Artery (Acomm) Connects ACA to ACA
- Internal Carotid Arteries (ICA)
- Middle Cerebral Arteries (MCA) Supply Cortex for Upper Limbs and Face
- Posterior Communicating Artery (Pcomm) Connects ICA to PCA
- Posterior Cerebral Arteries (PCA) Supply Occipital Cortex
- Basilar Artery Supplies Medulla, Pons, and PCA
3 mins
CN III
- Oculomotor Nerve
- Motor
- Eye Movement
- Accommodation
- Eyelid Opening
- Pupillary Constriction
1 min
CN IV
- Trochlear Nerve
- Motor
- Abducts, Depresses, Internally Rotates
48 secs
CN VII
- Facial Nerve
- Lacrimation
- Salivation
- Sensory
- Taste from Anterior 2/3 of Tongue
- Motor
- Facial Movement
- Stapedius Muscle
- Eyelid Closing
1 min
CN IX
- Glossopharyngeal Nerve
- Sensory
- Taste from Posterior 1/3 of Tongue
- Monitoring Carotid Body and Sinus
- Motor
- Stylopharyngeus
- Swallowing
- Salivation
1 min
CN X
- Vagus Nerve
- Sensory
- Aortic Arch Chemoreceptors and Baroreceptors
- Taste from Epiglottic Region
- Motor
- Swallowing
- Palate Elevation
- Talking
- Coughing
- Midline Uvula
1 min
Muscles of Mastication
- Temporalis
- Masseter
- Medial Pterygoid
- Lateral Pterygoid
- Innervation
- Mandibular Branch (V3) of Trigeminal Nerve
- Embryology
- 1st Branchial Arch
1 min
Posterior Column (Dorsal Column)
- Ascending Pathway (Sensory)
- Sensations
- Proprioception
- Fine Touch
- Pressure
- Vibration Sensation
- Anatomy
- Dorsal Root
- Fasciculus Cuneatus
- Arms
- Fasciculus Gracilis
- Lower Limbs
- Lesions
- Vitamin B12 Deficiency
- Tabes Dorsalis
2 mins
Spinothalamic Tracts
- Ascending Pathway (Sensory)
- Lateral
- Temperature
- Pain
- Anterior
- Crude Touch
- Pressure
- Decussates at Anterior White Commisure
- Lesion
- Contralateral Anesthesia
2 mins
Dermatomes - Cervical
- C2 - Posterior Cap Distribution
- C3 - High Turtleneck
- C4 - Low Collar Shirt
- C5 - Anterolateral Shoulder
- C6 - Thumb
- C7 - Middle Finger
- C8 - Pinky Finger
1 min
Dermatomes - Thoracic
- Characteristics
- T1 - Medial Arm
- T4 - Nipple
- T7 - Xiphoid
- T10 - Belly Button
- T12 - Pubis
58 secs
Dermatomes - Lumbosacral
- L2 - Medial Thigh
- L3 - Medial Knee
- L4 - Kneecap, Medial Ankle, and Big Toe
- L5 - Dorsum of Foot
- S1 - Lateral Foot, Posteriolateral Thigh
- S 2, 3, 4, 5 - Perianal and Genitals
2 mins
Epidural Hematoma
- Mechanism
- Middle Meningeal Artery Rupture
- Temporal Bone Fracture
- Hematoma Between Skull And Dura Mater
- Transtentorial Herniation
- Lucid Interval
- Imaging
- Lens-shaped on CT
- Does Not Cross Suture Lines
- Treatment
- Craniotomy
1 min
Subdural Hematoma
- Mechanism
- Tear of Bridging Veins
- Slow Bleeding, Over Time
- Imaging
- Subdural Space
- Crescent-shaped on CT
- Crosses Suture Lines
- Midline Shift
- Causes
- Elderly
- Whiplash
- Abusive Head Trauma (Shaken Baby Syndrome)
2 mins
Subarachnoid Hemorrhage
- Bleeding into Subarachnoid Space
- Mechanisms
- Trauma
- Aneurysm Rupture
- AVM Rupture
- Vasospasm causes Ischemia
- Signs & Symptoms
- "Worst Headache Of My Life"
- Diagnosis
- Noncontrast Head CT
- Lumbar Puncture
- Angiography
- Considerations
- Surgery
- Blood Pressure Control
- Intracranial Pressure Control
- Nimodipine for Vasospasm Prophylaxis
3 mins
Intraparenchymal Hemorrhage
- Causes
- Systemic hypertension most common causes
- Charcot bouchard: due to hypertension and effect Basal ganglia and internal capsule (lenticulostriate)
- Amyloid angiopathy (lobar hemorrhages in elderly)
- Vasculitis
- Neoplasm
- Reperfusion injury to ischemia
- Cavernous hemangioma
Middle Cerebral Artery
- Contralateral paralysis upper limb and face
- Contralateral loss of sensation of upper limb and face
- Affects Wernicke's area and Broca's area
- Aphasia if Lesion in Dominant (Left) Hemisphere
- Hemineglect if lesion in nondominant (right) hemisphere
1 min
Anterior Cerebral Artery
- Contralateral paralysis of lower limb
- Contralateral loss of sensation in lower limb
1 min
Lenticulostriate artery stroke
- Striatum and Internam capsule effected
- symptoms
- contralateral paralysis and/or sensory loss face/body
- Absence of cortical signs- neglect, aphasia, visual field loss
- cause
- Lacunar infarcts- due to hyaline ateriosclerosis from HTN
Anterior Spinal Artery Infarct
- Anterior Spinal Artery Stroke
- Medial Medullary Syndrome (caused by infarct of paramedian branches of ASA and or vertebral arteries)
- Lateral corticospinal tract - Contralateral Paralysis upper and lower limbs
- Medial Lemniscus - Decreased contralateral proprioception
- Caudal Medulla - Hypoglossal Nerve (Ipsilateral Hypoglossal Dysfunction (tongue licks the lesion)
- If infarcted at level of spinal cord causes Anterior Spinal Artery Syndrome
- Spares dorsal columns and lissauer tract
- It is a watershed area below T8 due to contralateral supply from the artery of Adamkiewicz
- Causes all loss of motor function and pain and temp below the level of the injury
