Clinical Maps

Dermatomes, myotomes and reflexes: which nerve root does what, how each is tested, and what changes point to.

59 clinical maps

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16 clinical maps starting with C Clear ×

Clinical Map C1-C2 Myotome Myotoma C1-C2 Neck The C1-C2 myotome covers the deep muscles that bend and nod the head on the upper…

Clinical Map C2 Dermatome Dermatoma C2 Head & Skull The C2 dermatome covers the back of the scalp from the occiput up toward the vertex,…

Clinical Map C3 Dermatome Dermatoma C3 Neck The C3 dermatome forms a collar over the upper and middle neck, front and back, below…

Clinical Map C3 Myotome Myotoma C3 Neck The C3 myotome mainly supplies neck muscles that bend the head to the side and helps…

Clinical Map C4 Dermatome Dermatoma C4 Shoulder The C4 dermatome is a cape-like area over the lower neck, the top of the shoulder…

Clinical Map C4 Myotome Myotoma C4 Shoulder The C4 myotome is tested by shrugging the shoulders, an action of the upper trapezius and…

Clinical Map C5 Dermatome Dermatoma C5 Upper Arm The C5 dermatome runs down the lateral (outer) side of the upper arm, over the deltoid…

Clinical Map C5 Myotome Myotoma C5 Upper Arm The C5 myotome is tested by elbow flexion, the ISNCSCI key muscle for C5, and also…

Clinical Map C6 Dermatome Dermatoma C6 Forearm The C6 dermatome covers the lateral forearm, the thumb and usually part of the index finger.…

Clinical Map C6 Myotome Myotoma C6 Forearm The C6 myotome is tested by wrist extension, the ISNCSCI key movement for C6, using extensor…

Clinical Map C7 Dermatome Dermatoma C7 Hand & Wrist The C7 dermatome centres on the middle finger, front and back, and runs as a narrow…

Clinical Map C7 Myotome Myotoma C7 Upper Arm The C7 myotome is tested by elbow extension, the ISNCSCI key movement for C7, through the…

Clinical Map C8 Dermatome Dermatoma C8 Hand & Wrist The C8 dermatome covers the little finger, the ulnar (inner) side of the hand and the…

Clinical Map C8 Myotome Myotoma C8 Forearm The C8 myotome is tested by finger flexion, the ISNCSCI key movement for C8, measured at…

Clinical Map Corneal Reflex Reflexus cornealis Head & Skull The corneal reflex is a protective blink when the cornea is touched. The sensory signal travels…

Clinical Map Cremasteric Reflex Reflexus cremastericus Pelvis & Hip The cremasteric reflex is a superficial reflex in males in which stroking the skin of the…