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Muscles Beginning With E
14 muscles in the reference begin with the letter E. Every name links to a page giving the muscle’s origin, insertion, main actions and nerve supply.
A B C D E F G H I L M N O P Q R S T V Z
| Muscle | Main actions | Nerve supply |
|---|---|---|
| Erector Spinae | Extends the spine (straightens the back); Tilts the trunk to the same side | Dorsal rami of spinal nerves |
| Extensor Carpi Radialis Brevis | Straightens the wrist (extension) | Posterior interosseous nerve (radial, C7–C8) |
| Extensor Carpi Radialis Longus | Straightens the wrist (extension); Tilts the hand toward the thumb side (radial deviation) | Radial nerve (C6–C7) |
| Extensor Carpi Ulnaris | Straightens the wrist (extension); Tilts the hand toward the little-finger side (ulnar deviation) | Posterior interosseous nerve (C7–C8) |
| Extensor Digiti Minimi | Straightens the little finger | Posterior interosseous nerve (C7–C8) |
| Extensor Digitorum | Straightens the fingers at the knuckles (MCP joints); Helps straighten the wrist | Posterior interosseous nerve (C7–C8) |
| Extensor Digitorum Brevis | Straightens (extends) the toes | Deep fibular nerve (L5–S1) |
| Extensor Digitorum Longus | Straightens (extends) toes 2–5; Lifts the foot upward (dorsiflexion) | Deep fibular nerve (L5–S1) |
| Extensor Hallucis Longus | Straightens (extends) the great toe; Helps lift the foot upward (dorsiflexion) | Deep fibular nerve (L4–L5) |
| Extensor Indicis | Straightens the index finger independently (pointing) | Posterior interosseous nerve (C7–C8) |
| Extensor Pollicis Brevis | Straightens the thumb at the knuckle (MCP joint); Helps move the thumb away from the palm | Posterior interosseous nerve (C7–C8) |
| Extensor Pollicis Longus | Straightens the thumb tip; Pulls the thumb back in line with the hand (reposition) | Posterior interosseous nerve (C7–C8) |
| External Intercostal Muscles | Elevate the ribs, expanding the chest in quiet breathing in | Intercostal nerves |
| External Oblique | Rotates the trunk to the opposite side; Flexes and side-bends the trunk | Lower intercostal nerves (T7–T12) |
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.