extensor carpi radialis longus muscle in dogs

Extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger). [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the extensor carpi radialis longus muscle is

Extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger). [WP,unvetted]. The atlas records it as a muscle at the organ scale in the dog.

Where the extensor carpi radialis longus muscle is

It sits in the forelimb, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What the extensor carpi radialis longus muscle connects to

The atlas records 7 typed relationships for it, across 5 kinds of connection. part of forelimb zeugopod.

Supply and innervation

Innervation: radial nerve.

Also called

Also recorded as extensor carpi radialis longus and musculus extensor carpi radialis longus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001524, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: forelimb zeugopod.
• A kind of: extensor muscle, forelimb zeugopod muscle and muscle of shoulder.
• Innervated by: radial nerve.
• inserts into: metacarpal bone of digit 2.
• originates from: distal epiphysis of humerus.

Questions

Where is the extensor carpi radialis longus muscle?

It sits in the forelimb, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What does the extensor carpi radialis longus muscle connect to?

Part of: forelimb zeugopod.

Is the extensor carpi radialis longus muscle the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.