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Muscles Beginning With A
15 muscles in the reference begin with the letter A. 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 |
|---|---|---|
| Abductor Digiti Minimi (Foot) | Moves the little toe away from the midline; Bends the little toe | Lateral plantar nerve (S2–S3) |
| Abductor Digiti Minimi (Hand) | Spreads the little finger away from the ring finger | Ulnar nerve, deep branch (C8–T1) |
| Abductor Hallucis | Moves the great toe away from the midline of the foot; Bends the great toe | Medial plantar nerve (S2–S3) |
| Abductor Pollicis Brevis | Moves the thumb away from the palm, at right angles to it (palmar abduction) | Median nerve, recurrent branch (C8–T1) |
| Abductor Pollicis Longus | Moves the thumb away from the palm in its plane (abduction at the wrist joint of the thumb); Helps straighten the wrist toward the thumb side | Posterior interosseous nerve (C7–C8) |
| Achilles Tendon Muscles (Plantaris and Triceps Surae) | Plantarflex the ankle | Tibial nerve (S1–S2) |
| Adductor Brevis | Brings the thigh toward the midline (adduction); Helps flex the thigh | Obturator nerve (L2–L4) |
| Adductor Group (Thigh, Overview) | Bring the thighs together (adduction); Stabilise the pelvis in walking | Obturator nerve (L2–L4) |
| Adductor Hallucis | Pulls the great toe toward the midline of the foot; Supports the transverse arch | Lateral plantar nerve, deep branch (S2–S3) |
| Adductor Longus | Brings the thigh toward the midline (adduction); Helps flex the thigh | Obturator nerve (L2–L4) |
| Adductor Magnus | Brings the thigh toward the midline (adduction); Hamstring part extends the thigh | Obturator nerve (adductor part) and sciatic nerve, tibial division (hamstring part) |
| Adductor Pollicis | Pulls the thumb in toward the palm (adduction); Powers pinch grip | Ulnar nerve, deep branch (C8–T1) |
| Anconeus | Assists elbow extension; Steadies the ulna during forearm rotation | Radial nerve (C7–C8) |
| Anterior Compartment of the Leg (Group) | Lift the foot and toes upward (dorsiflexion and toe extension) | Deep fibular nerve (L4–S1) |
| Articularis Genus | Pulls the knee joint's synovial pouch upward during extension so it is not trapped | Femoral nerve (L2–L4) |
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.