Lateral digital extensor muscle of the hind limb

Musculus extensor digitorum lateralis

  • Muscle
  • Back leg
  • Paired: left and right
  • Horse

Extends the digit and the carpus or tarsus.

About the lateral digital extensor muscle of the hind limb of the horse

Lateral digital extensor muscle of the hind limb is a muscle of the back leg (pelvic limb), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus extensor digitorum lateralis. You can turn it above, see it in place in the back leg of the horse, and open it inside the whole animal in Vetomica.

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin
In the forelimb, the elbow's outer collateral ligament and the outer radius and ulna; in the hind limb, the stifle's outer collateral ligament and the fibula.
Insertion
Front of the proximal phalanx in the forelimb; in the hind limb its tendon joins that of the long digital extensor on the cannon.
Action
Extends the digit and the carpus or tarsus.
Nerve
Radial nerve in the forelimb; fibular nerve in the hind limb.

Written for Vetomica in its own words from the standard reference anatomy of the horse; the books it was checked against are listed below.

Terminology

English
Lateral digital extensor muscle of the hind limb
Latin (NAV)
Musculus extensor digitorum lateralis
Status
A valid term in the Nomina Anatomica Veterinaria

Questions about the lateral digital extensor muscle of the hind limb

What is the Latin name of the lateral digital extensor muscle of the hind limb?
In the Nomina Anatomica Veterinaria, the lateral digital extensor muscle of the hind limb is called Musculus extensor digitorum lateralis.
Where is the lateral digital extensor muscle of the hind limb of the horse?
Lateral digital extensor muscle of the hind limb is a muscle of the back leg (pelvic limb), one on each side of the body.
Where does the lateral digital extensor muscle of the hind limb originate and insert?
Origin: In the forelimb, the elbow's outer collateral ligament and the outer radius and ulna; in the hind limb, the stifle's outer collateral ligament and the fibula. Insertion: Front of the proximal phalanx in the forelimb; in the hind limb its tendon joins that of the long digital extensor on the cannon.
What nerve supplies the lateral digital extensor muscle of the hind limb?
Radial nerve in the forelimb; fibular nerve in the hind limb.
What does the lateral digital extensor muscle of the hind limb do?
Extends the digit and the carpus or tarsus.

See the lateral digital extensor muscle of the hind limb inside the whole horse.

Vetomica opens on this structure with every layer of the horse around it: peel back the skin and the muscles, cut a section through it, X-ray it, and practise naming it until you stop getting it wrong.

Free for 7 days, no card. After that the skeletons stay free.

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