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Muscles Beginning With D
10 muscles in the reference begin with the letter D. 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 |
|---|---|---|
| Deep Lateral Rotators (Group) | Rotate the thigh outward; Hold the femoral head in the socket | Sacral plexus branches (L5–S2) and obturator nerve |
| Deep Posterior Compartment of the Leg (Group) | Curl the toes, invert the foot and support the arch | Tibial nerve (L4–S3) |
| Deltoid | Lifts the arm away from the body (abduction); Front fibres flex the arm | Axillary nerve (C5–C6) |
| Deltoid (Posterior Part) | Extends the arm backward; Rotates the arm outward | Axillary nerve (C5–C6) |
| Depressor Anguli Oris | Pulls the corner of the mouth down, as in frowning | Facial nerve (CN VII), marginal mandibular branch |
| Diaphragm | Main muscle of breathing in — flattens and descends, drawing air into the lungs; Raises abdominal pressure for coughing and straining | Phrenic nerve (C3–C5) |
| Digastric | Depresses the jaw (opens the mouth); Elevates the hyoid bone | Anterior belly: trigeminal (CN V3); posterior belly: facial nerve (CN VII) |
| Dorsal Foot Muscles (Extensor Digitorum and Hallucis Brevis) | Straighten the toes | Deep fibular nerve (L5–S1) |
| Dorsal Interossei (Foot) | Spread the toes apart (around the second toe's axis) | Lateral plantar nerve (S2–S3) |
| Dorsal Interossei (Hand) | Spread the fingers apart (abduction) — 'DAB'; Help bend the knuckles while straightening the finger joints | Ulnar nerve, deep branch (C8–T1) |
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.