A hand that you’ll never forget… in every village & city ✋🏼 Read notes ⤵️
If you love this lesson as much as we loved making it then please drop a ♥️ in the comments. Please do share this with another as well!
Your hands carry Pain, Touch & Sensation but it you’re in healthcare you will also feel Pain, Sacrifice & Loyalty.
Dermatomes of the Hand 👋🏽
✅ Overview
Dermatomes are specific areas of our skin that receives sensory innervation from a single spinal nerve! Spinal nerves are part of the PNS and from nerve roots that branch from the spinal cord. Dermatomes are key for sensory perception, fine motor skills & coordination. There are a total of 30 dermatomes that relay sensation from skin to brain.
Dermatomes of the hand receive innervation mainly from Spinal nerves C5 to T1. Our good ole Brachial Plexus gives rise to several nerves that supply the hand, such as: Median, Ulnar, & Radial nerves.
✅ Nerves
Median Nerve
Formed by the lateral & medial cords of the brachial plexus. Responsible along the palmar (palm side) aspect of our hand (thumb, index, middle & half of the ring finger). It also innervates tips of the same fingers on the dorsal (back side) aspect of our hand. We represent the median nerve dermatome by the spinal nerves C6, C7, & C8.
Ulnar Nerve
Arising from the medial cord of the brachial plexus. Covers the little finger, half of the ring finger, & adjacent area of the palm on the palmar side. On the dorsal side, the dermatome is responsible for little finger, half of ring finger, & part of the hand. We represent the Ulnar nerve dermatome by the spinal nerves C8 & T1.
Radial Nerve
Originates from the posterior cord of the brachial plexus. Seen on the dorsal aspect of the hand. Innervates areas between thumb & index finger & lateral part of the hand near the wrist. We represent the Radial nerve dermatome by the spinal nerves C6 & C7.
🚨NOTE! Division variable between ulnar & radial innervation on dorsum of the hand & often aligns with middle of 3rd digit instead of 4th digit as shown in the illustration.
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Norway vs Senegal today! ⚽️ Who will win the match? Drop 🇳🇴 or 🇸🇳 in the comments!! ⤵️
Here is Haaland who is a part of our FIFA World Cup Medical Series. Review this to get the high yield points. Follow along for this series as we cover clinical vignettes, mnemonics, tricks, and notes you wont ever forget! Only .med ⚽️
✅ HAALAND — High-Yield Mnemonic for Acromegaly Features
H: HypergLycemia / diabetes
A: Acral entargement
A: Amenorrhea
L: Largejaw (prognathism)
A: Arthritis / Arthralgia
N: Neuropathy
D: Deep voice
06/21/2026
These are slides you should definetly know for your exams🔬Share this with your friends ⚽️
Stay locked in for this incredible summer. Yes, we got the FIFA World Cup on and NO, we will not slow down our studying. Swipe through and learn em!
✅ High Yield Slides
Brought to you by the legendary Belgium goalkeeper - Thibaut Courtois
1: Broad Based Budding - Blastomycosis
2: Phyllodes Tumor - Breast Cancer
3: Aschoff Bodies - Rheumatic fever
4: Schiller-Duval Bodies - Yolk Sac Tumor
5: Carcinoid Tumor - Neuroendocrine cell
6: Hairy Cell - HCL
7: Multisegmented Neutrophils - B12/ Folate deficiency
8: PAS+ “Foamy” Macrophages - Whipple Disease
FIFA Schedule:
June 21: Belgium vs Iran
June 26: Belgium vs New Zealand
06/20/2026
Fire those action potentials because it’s the World Cup time!
Swipe for unique captions on each slide ➡️
Keep up with us daily with reviews and lessons for our FIFA World Cup Medical Series. Follow along .med
Swipe for unique notes in captions of each post ➡️
✅ Overview
The brain is mainly composed of neurons and glial cells (supporting cells that provide structure and metabolic support).
Neurons are specialized cells that transmit electrical and chemical signals.
A neuron has four main components:
*Cell body (soma): contains the nucleus and controls cell function
*Dendrites: branching structures that receive signals from other neurons
*Axon: long projection that sends electrical impulses away from the cell body
*Synapse: junction between neurons where signal transmission occurs (chemical or electrical)
✅ Types of Neurons
Neurons are classified based on the number of processes extending from the cell body.
1️⃣ Unipolar Neurons
*Rare in vertebrates
*Single process extends from the cell body
*More common in invertebrates
2️⃣ Bipolar Neurons
*One dendrite + one axon
*Primarily sensory neurons
*Found in: Retina, Olfactory epithelium & Cochlea & vestibular apparatus (CN VIII)
3️⃣ Pseudo-Unipolar Neurons
*Single process that splits into peripheral & central branches
*Both branches function as axons
*Carry sensory information to the CNS
*Found in: Dorsal root ganglia & Cranial sensory ganglia
4️⃣ Multipolar Neurons
*Most common neuron type
*One axon + multiple dendrites
*Found throughout the brain & spinal cord
*Include: Motor neurons & Interneurons
usmlestep1
Comment your answer below!
It’s the WORLD CUP time! And we can’t wait for you to see our FIFA World Cup Medical Series ⚽️
usmlestep1
Every beat of our heart remembers a stand once taken 🫀 Read notes below ⤵️
Cardiac Conduction in 5 Steps⚡️Please stay tuned for more content coming your way. To see our posts please engage with our content. Share it, like it, and learn it!
Cardiac Conduction System 🫀
✅ Overview
Heart is able to contract on its own because it contains specialized cardiac muscle tissue that spontaneously forms impulses and transmits them to the myocardium to initiate contraction.
Conducting system has 5 components
Pathway: 1. SA node → 2. AV node → 3. bundle of His → 4. Left & Right bundle branches → 5. Purkinje fibres
The whole of the conducting system of the heart is provided by the right coronary artery with the exception of a part of the left branch of the AV bundle (of His) that is provided by the left coronary artery (exam question).
✅ Clinical
Defect or damage of conduction causes cardiac arrhythmias. If bundle of His fails to conduct normal impulses, there’s alteration in the rhythmic contraction of the ventricles (arrhythmias).
If complete bundle block takes place there is complete dissociation in the rate of contraction of atria & ventricles. Common cause of defective conduction because of AV bundle is atherosclerosis of the coronary arteries.
Artificial pacemaker: small electrical device commonly fitted to monitor and correct heart rate and rhythm. It’s inserted into the chest under the left clavicle, with wires connected to the heart via the venous system.
Most common indication for pacemaker is bradycardia. Once inserted, the pacemaker monitors the heart rate, and only fires if the rate becomes too slow. Pacemakers can also be used to treat some tachycardias, certain types of heart block & other rhythm abnormalities. Rapid pulse is referred to as tachycardia, slow pulse is bradycardia and irregular pulse is arrhythmia.
There is no day like yours… ❤️
06/18/2026
Mexico vs. South Korea tonight! Who’s winning? 🇲🇽or 🇰🇷Swipe to see Knee MRI’s & learn ⚽️
Today for the FIFA World Cup Medical Series is Knee Anatomy with Mexican Legend Raúl Jiménez 🇲🇽. And yes his knee is just fine 😅
Share this lesson with your friends, sport fans and colleagues!
✅ Menisci
Functions: Shock absorption, load distribution, joint stability
Medial Meniscus
*C shaped, attached to MCL, less mobile & most commonly injured
Lateral Meniscus
*O-shaped, not attached to LCL
✅ Ligaments
Cruciate
ACL (anterior cruciate ligament)
*Prevents anterior translation of tibia, hyperextension. Test with Lachman test
PCL (posterior cruciate ligament)
*Prevents translation of tibia. Test with posterior drawer test
Collateral
MCL (Medial collateral ligament)
*Resists valgus stress and attached to medial meniscus
LCL (lateral collateral ligament)
*Resists varus stress and not attached to lateral meniscus
✅ Injury
Unhappy Triad (classic sports injury with lateral blow to knee)
*ACL
*MCL
*Medial meniscus
Common Fibular (Peroneal) Nerve
*Wraps around fibular neck
*Vulnerable to fracture
*Causes: Foot drop, Loss of dorsiflexion, Sensory loss over dorsum of foot
06/17/2026
Messi recorded a historic hat-trick, and today Ronaldo takes the field. Who’s the best? 🐐 Comment your pick below! PS: Swipe this lesson to see Español ⤵️
FIFA World Cup Medical Series brought to you by REV MED. We’ll be launching lessons in Español very soon. Stay tuned and share these lessons with friends!
✅ Messi PSNS & Ronaldo SNS
You know how Lionel Messi & Christiano Ronaldo have a different game?
Well we thought we’d say Messi is the Parasympathetic Nervous System (PSNS). He is more chill, relaxed, and tactical.
And so Ronaldo is the Sympathetic Nervous System (SNS). He is more energetic, explosive and powerful.
If you swipe through this lesson you’ll find their names used as Mnemonics to understand what goes on.
Here’s some more Mnemonics for PSNS & SNS:
Sympathetic = Ronaldo Mode
aka your “FIGHT or FLIGHT” system
*Mnemonic: The 4 F’s
*Fight, Flight, Fear, F*ing**
He’s pressing high, heartbeat racing, pupils wide — full beast mode.
Think: “DIME”
→ Dilate pupils
→ Inhibit digestion
→ Myocardial contraction ↑
→ Ej..culat!on
Parasympathetic = Messi Mode aka your “REST and DIGEST” system
Mnemonic: SLUDD or SLUDGE
He’s conserving energy, smooth dribbles, playing with peace.
*Salivation
*Lacrimation
*Urination
*Digestion
*Defecation / GI upset
*Emesis
Ronaldo = SNS = STRESS MODE
Messi = PSNS = PEACE MODE
Who’s the fre
06/16/2026
Which country are you rooting for? Comment the name & flag below ⤵️ Beta Blockers & more!
MBAPPE is today’s mnemonic for the FIFA World Cup Medical Series by REV MED. We have incredible content under way!! Expect clinical vignettes, mnemonics, tricks, and tons of notes!!
✅ Beta Blockers Mnemonic
MBAPPE
*Metoprolol
*Bisoprolol
*Atenolol
*Propranolol
*Pindolol
*Esmolol
Stay tuned, and most importantly, follow the page and engage so you see our latest posts!
Today is France 🇫🇷 vs Senegal 🇸🇳 who do you have winning?
Spain or Cabo Verde? Who are you rooting for? Drop 🇪🇸 or 🇨🇻 in the comments!! ⤵️
Here is PEDRI who is a part of our FIFA World Cup Medical Series. Review this to get the high yield points. Follow along for this series as we cover clinical vignettes, mnemonics, tricks, and notes you wont ever forget! Only .med ⚽️
✅ Mnemonic for Parkinson’s: TRAP
Tremor: Shaking, usually starts on one side
Rigidity: Stiffness of the limbs, neck or trunk
Akinesia: Loss or impairment in power for voluntary movement
Posture: Noticeable posture and balance
Save this lesson and review with your classmates, it will come in clutch on exam day.
Knicks win the first NBA Championship since 1973. Here’s the Heart Anatomy Trick with our MVP Jalen Brunson 🏀
Are you excited for the World Cup? We have an awesome World Cup medical series coming up! Stay tapped in by engaging with our content 👀
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