Muscles of the Shoulder Region

Illustration of the superficial muscles of the back, highlighting their anatomical positions.

The Extrinsic Muscles of the Shoulder

Illustration of the rotator cuff muscles that stabilize the shoulder joint.

The Intrinsic Muscles of the Shoulder

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Encyclopaedia

Rectus Femoris

by Roxanne Salkeld

Bony landmarks and foramina of the posterior cranial fossa.
The Cranial Fossae

The Posterior Cranial Fossa

by Briony Adams

Diagram illustrating the external and internal intercostals muscles of the thoracic wall.
Encyclopaedia

Internal Intercostals

by Dr Oliver Jones