Jesse Shared "IMSK Exam 1" - 23 Picmonics
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IMSK Exam 1
Skeletal Muscle Contraction Initiation
- Somatic Motor Neuron Releases Acetylcholine
- Acetylcholine Causes Sodium Influx
- Cell Reaches All-or-Nothing Threshold
- Voltage-Gated Calcium Channels Undergo Conformational Change
- Sarcoplasmic Reticulum Causes Calcium Flood
- Calcium Flood Enters Myofibrils
1 min
Skeletal Muscle Contraction Action
- Characteristics
- Calcium Binds Troponin
- Active Site Exposed
- Many Mitochondria Produce ATP
- Myosin Head Binds
- Power Stroke
- Myosin Head Releases Active Site
- ATP Consumed
1 min
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
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
Autonomic Nervous System
- Characteristics
- Sympathetic Nervous System
- Fight or Flight
- All Preganglionic Neurons Release Acetylcholine
- Sympathetic Postganglionic Neurons Release Norepinephrine
- Antagonistic Effects of Sympathetic and Parasympathetic Nervous Systems
- Parasympathetic Nervous System
- Rest and Digest
- Parasympathetic Postganglionic Neurons Release Acetylcholine
2 mins
Lambert-Eaton Syndrome
- Mechanism
- Autoantibody to the Presynaptic Calcium Channel on Motor Neurons
- Inhibits Acetylcholine (ACh) Release at Neuromuscular Junction
- Paraneoplastic Syndrome
- Small Cell Lung Cancer
- Symptoms
- Proximal Muscle Weakness
- Improves with Muscle Use
- Autonomic Symptoms
- Extraocular Muscle Sparing
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
Neck and Shoulder Muscles
- Superficial
- Splenius Capitis
- Trapezius
- Rhomboid Minor
- Rhomboid Major
- Deltoid
- Latissimus Dorsi
- Levator Scapulae
- Deep
- Supraspinatus
- Infraspinatus
- Teres Minor
- Teres Major
2 mins
Back Muscles
- Superficial
- Latissimus Dorsi
- External Oblique
- Internal Oblique
- Gluteus Medius
- Gluteus Maximus
- Deep
- Erector Spinae
- Serratus Anterior
- Serratus Posterior
2 mins
Myasthenia Gravis
- Mechanism
- Antibodies to Acetylcholine Receptor
- Symptoms
- Ptosis
- Diplopia
- Weakness with Muscle Use
- Respiratory Death
- Thymus Associated
- Treatment
- Acetylcholinesterase Inhibitors
- Plasmapheresis
- Thymectomy
1 min
Norepinephrine
- Mechanism of Action
- Alpha Agonist
- Beta1 Agonist
- Indications
- Hypotension
- Side Effect
- Decreases Renal Blood Flow
1 min
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
CN XI
- Accessory Nerve
- Motor
- Head Turning
- Shoulder Shrugging
36 secs
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
Somatic Reflex Arc
- Spinal Cord
- Sensory (Afferent) Neuron
- Interneurons Transmit
- Motor (Efferent) Neuron
- Effector Targets
1 min
Hyperkalemia
- Assessment
- > 5.0 mEq/L K+
- Abdominal Cramps
- Muscle Weakness
- Diarrhea
- Arrhythmia
- Tall, Peaked T Waves
- Interventions
- IV Calcium
- Infusion of Glucose and Insulin
- Loop or Thiazide Diuretics
- Kayexalate
- Dialysis
- Prevention Education
2 mins
Lumbar Puncture
- Indications
- CSF Sample
- CSF Pressure
- Considerations
- Empty Bladder
- Side-lying Position
- Between 3rd and 4th Lumbar Vertebrae
- Number Tubes
- Supine Position After Procedure
- Contraindications
- Increased ICP (Intracranial Pressure)
- Infection at Puncture Site
2 mins
Herniated Disc (Nucleus Pulposus)
- Cause/Mechanism
- Spine Trauma
- Natural Degeneration
- Spinal Stenosis
- Assessment
- Pain
- Weakness
- Urinary and Fecal Incontinence
- Interventions
- Brace
- Medications
- Outpatient Procedures
- Surgery
2 mins
Alpha 1 Receptor
- Characteristics
- Gq Subunit
- Increase Vascular Smooth Muscle Contraction
- Increase Pupillary Dilator Muscle Contraction
- Increase Intestinal and Bladder Sphincter Muscle Contraction
1 min
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