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Muscles Beginning With B
6 muscles in the reference begin with the letter B. 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 |
|---|---|---|
| Biceps Brachii | Bends the elbow (flexion); Turns the forearm palm-up (supination) | Musculocutaneous nerve (C5–C6) |
| Biceps Femoris | Bends the knee (flexion); Rotates the leg outward when the knee is bent | Sciatic nerve: tibial division (long head) and common fibular division (short head) |
| Biceps Femoris — Short Head | Bends the knee (flexion); Rotates the leg outward when the knee is bent | Sciatic nerve, common fibular division (L5–S2) |
| Brachialis | Bends the elbow (pure flexor, in any forearm position) | Musculocutaneous nerve (C5–C6), with a small radial contribution |
| Brachioradialis | Bends the elbow, fastest with the forearm in mid-position; Returns the forearm to mid-position from full rotation | Radial nerve (C5–C7) |
| Buccinator | Presses the cheek against the teeth; Keeps food on the chewing surfaces | Facial nerve (CN VII), buccal branch |
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.