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humerus

The long bone of the upper arm, from the shoulder to the elbow.

HYOO-mer-us noun

What it means

Its top fits into the shoulder joint and its lower end forms part of the elbow. Older adults often break the upper end in a fall onto an outstretched arm. The radial nerve runs along it, so a break in the middle of the bone can cause wrist drop.

At a glance

Spanishhúmero

Related terms

musculoskeletal

Having to do with the muscles, bones, joints, tendons and ligaments.

deltoid

The thick, triangle-shaped muscle that covers the shoulder and lifts the arm out to the side.

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