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The general plan of a vertebra and how it changes along the spine to suit the different jobs of the neck, chest and lower back.
Body in front, arch behind, cord in between: cervical carry the vertebral artery, thoracic carry ribs, lumbar carry weight; the atlas holds the skull, the axis lets it turn.
Brachial Plexus
A network of nerves (roots C5–T1) that supplies the upper limb.
Femoral Triangle
A triangular space in the upper thigh containing major neurovascular structures.
Carpal Tunnel
The narrow passage at the wrist through which the median nerve and flexor tendons run.
The Knee Joint
The largest synovial joint in the body, a modified hinge between femur, tibia and patella allowing flexion, extension and slight rotation.
The Hip Joint
A ball-and-socket synovial joint between the head of the femur and the acetabulum, built for stability and weight-bearing.
The Shoulder Joint
A ball-and-socket synovial joint between the head of the humerus and the shallow glenoid cavity of the scapula, built for a huge range of movement.