parts of muscle

 Parts of Muscle

Muscle contains fleshy center, widest part called belly of muscle and two ends that attach to other tissue.

Parts of muscle

1. Belly of muscle

2. Origin and insertion of muscle

1. Belly of muscle

Large fleshy portion of muscle between origin and insertion is called belly or gaster.

2. Origin and insertion of muscles

Origin is attachment site that doesn't move during contraction. The end of muscle attach to stationary bone is called origin (or head).

Insertion is attachment site that does move when muscle contract. The end of muscle attached to bone that moves is insertion.

Origin is more proximal attachment (closer to axial skeleton) and insertion is more distal attachment.