Angie Shared "Neuro" - 55 Picmonics
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Neuro
Central Nervous System (CNS)
- Characteristics
- Frontal Lobe
- Parietal Lobe
- Temporal Lobe
- Occipital Lobe
- Medulla Oblongata
- Cerebellum
- Pons
- Spinal Cord
- Dorsal Root Ganglia
- Grey Matter
- White Matter
2 mins
Motor Neuron Signs UMN and LMN
- Upper Motor Neuron (Increases)
- Increased DTRs
- Positive Babinski
- Spastic Paralysis
- Clasp-Knife Reaction
- Lower Motor Neuron (Decreases)
- Decreased DTRs
- Negative Babinski
- Flaccid Paralysis
- Muscle Atrophy
- Fasciculations
2 mins
Electrical Synapse
- Characteristics
- Cardiac and Smooth Muscle Location
- Fast Transmission
- Bidirectional
- Presynaptic Na+ Floods Through Gap Junction
- Na+ Influx Initiates Postsynaptic Action Potential
2 mins
Chemical Synapse
- Voltage-Gated Calcium Channels Open
- Ca2+ Influx
- Vesicle-Membrane Fusion
- Exocytosis of Neurotransmitter
- Neurotransmitter Binds Post-Synaptic Receptors
- Neurotransmitter Breakdown
- Neurotransmitter Reuptake
1 min
Neuron Resting Potential
- Characteristics
- More Na+ Outside
- Sodium-Potassium Pump
- K+ Leaks Out
- More K+ Inside
- About -70mV
- Voltage-Gated Sodium Channels are Closed
2 mins
Neuron Action Potential Initiation
- Characteristics
- Summation of Signals
- -50 mV Threshold Value Reached
- Voltage-Gated Sodium Channels Open
- Local Depolarization
- Na+ Influx
- Potassium Channels open
- Repolarization
2 mins
Neuron Action Potential Propagation
- Characteristics
- Unidirectional Depolarization
- Absolute Refractory Period In Preceding Na+ Channels
- Neighboring Voltage Gate Channels Open
- Nodes of Ranvier
- Myelination Increases Propagation Speed
- Saltatory Conduction
3 mins
Local Anesthetic Overview
- Indications
- Minor Procedures
- Epidurals
- Mechanism of Action
- Blocks Na+ Channels
- State Dependent
- Combined with Vasoconstrictors
- Infected Tissue Requires Higher Dose
- Drugs
- Esters
- Amides
- Side Effects
- Arrhythmias
- Cardiotoxicity
1 min
Lidocaine
- Mechanism
- Blocks Na+ Channels
- Indications
- Ventricular Arrhythmia
- Anesthetic
- Side Effects
- Paresthesias
- Seizures
- Respiratory Depression
- Drowsiness
- Consideration
- Anesthetic Effects Extended with Epinephrine
1 min
Vitamin B12 (Cobalamin) Mechanism and Deficiency
- Mechanism
- Cobalamin
- Large reserve pool in the liver
- Homocysteine to methionine
- Methylmalonyl CoA to succinyl CoA
- Deficiency Signs and Symptoms
- Macrocytic Megaloblastic Anemia
- Hypersegmented Neutrophils
- Neurologic defects
- Posterior column
- Lateral corticospinal tract
- Spinocerebellar tract
5 mins
Types of Strokes
- Warning Signs
- Transient Ischemic Attack (TIA)
- Reversible Ischemic Neurologic Deficit (RIND)
- Types
- Ischemic
- Thrombotic
- Atherosclerosis
- Embolic
- Atrial Fibrillation
- Hemorrhagic
- Severe Hypertension
3 mins
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
Guillain-Barre Syndrome Assessment
- Assessment
- Ascending Paralysis
- Muscle Weakness
- Paresthesias (Pins and Needles)
- Diplopia
- Difficulty Speaking
- Dysphagia
- Labile Blood Pressure
- Loss of Bowel and Bladder Control
- Considerations
- Aggressive Airway Management
2 mins
Cranial Nerve Function
- Sensory
- CN I
- CN II
- CN VIII
- Motor
- CN III
- CN IV
- CN VI
- CN XI
- CN XII
- Both
- CN V
- CN VII
- CN IX
- CN X
1 min
CN I
- Olfactory Nerve
- Sensory
- Smell
36 secs
CN II
- Optic Nerve
- Sensory
- Vision
35 secs
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 V
- Trigeminal Nerve
- Sensory
- Facial Sensation
- Motor Function (Via Mandibular Nerve)
- Mastication Muscles
1 min
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