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Body Atlas, Clinical Map Reference

Clinical Maps

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

59 clinical maps
59 clinical maps
Clinical Map Jaw Jerk Reflex Reflexus mandibularis Head & Skull The jaw jerk is a stretch reflex of the jaw closing muscles: a tap on the…
Clinical Map L1 Dermatome Dermatoma L1 Pelvis & Hip The L1 dermatome covers the groin, the skin over the inguinal ligament and the upper front…
Clinical Map L2 Dermatome Dermatoma L2 Thigh The L2 dermatome slopes obliquely across the front and inner upper thigh, from the outer hip…
Clinical Map L2 Myotome Myotoma L2 Pelvis & Hip The L2 myotome is tested by hip flexion, the ISNCSCI key movement for L2, through the…
Clinical Map L3 Dermatome Dermatoma L3 Thigh The L3 dermatome covers the lower front and inner thigh, running down to the inner side…
Clinical Map L3 Myotome Myotoma L3 Thigh The L3 myotome is tested by knee extension, the ISNCSCI key movement for L3, through the…
Clinical Map L4 Dermatome Dermatoma L4 Lower Leg The L4 dermatome covers the front of the knee and runs down the inner (medial) side…
Clinical Map L4 Myotome Myotoma L4 Lower Leg The L4 myotome is tested by ankle dorsiflexion, the ISNCSCI key movement for L4, mainly through…
Clinical Map L5 Dermatome Dermatoma L5 Lower Leg The L5 dermatome runs down the outer (lateral) side of the lower leg and across the…
Clinical Map L5 Myotome Myotoma L5 Lower Leg The L5 myotome is tested by extension of the big toe, the ISNCSCI key movement for…
Clinical Map Medial Hamstring Reflex Reflexus musculorum ischiocruralium medialium Knee The medial hamstring reflex is a stretch reflex in which a tap on the medial hamstring…
Clinical Map Patellar Reflex Reflexus patellaris Knee The patellar reflex, or knee jerk, is a stretch reflex in which a tap on the…
Clinical Map Plantar Reflex (Babinski Sign) Reflexus plantaris Foot & Ankle The plantar reflex is a superficial reflex in which firmly stroking the outer sole of the…
Clinical Map Pupillary Light Reflex Reflexus pupillaris ad lucem Head & Skull The pupillary light reflex makes both pupils constrict when light enters one eye. The signal travels…
Clinical Map S1 Dermatome Dermatoma S1 Foot & Ankle The S1 dermatome covers the outer (lateral) border of the foot, the little toe, the heel…
Clinical Map S1 Myotome Myotoma S1 Lower Leg The S1 myotome is tested by ankle plantarflexion, the ISNCSCI key movement for S1, through the…
Clinical Map S2 Dermatome Dermatoma S2 Thigh The S2 dermatome is a long strip running down the back of the thigh and the…
Clinical Map S2 Myotome Myotoma S2 Thigh The S2 myotome is commonly tested by knee flexion through the hamstrings, together with S1, and…
Clinical Map S3 Dermatome Dermatoma S3 Pelvis & Hip The S3 dermatome covers the inner buttock and the skin around the ischial tuberosity and the…
Clinical Map S3-S4 Myotome Myotoma S3-S4 Pelvis & Hip The S3-S4 myotome supplies the pelvic floor and the external anal and urethral sphincters. These roots,…
Clinical Map S4-S5 Dermatome Dermatoma S4-S5 Pelvis & Hip The S4-S5 dermatome forms the innermost ring of the saddle area, the skin immediately around the…
Clinical Map T1 Dermatome Dermatoma T1 Forearm The T1 dermatome runs along the medial (inner) side of the forearm from about the wrist…
Clinical Map T1 Myotome Myotoma T1 Hand & Wrist The T1 myotome is tested by finger abduction, the ISNCSCI key movement for T1, using abductor…
Clinical Map T2 Dermatome Dermatoma T2 Chest The T2 dermatome is a band across the upper chest and back that also extends into…
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