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| biceps |
| left: biceps relaxed to extend forearm right: biceps contracted to raise forearm (Carlyn Iverson) |
- A muscle with two heads or points of origin.
- The large muscle at the front of the upper arm that flexes the forearm. Also called biceps brachii.
- The large muscle at the back of the thigh that flexes the knee joint. Also called biceps femoris.
[From Latin, two-headed : bi-, two; see





