Third peroneal muscle

Musculus peroneus tertius

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

Flexes the hock whenever the stifle flexes, as part of the reciprocal apparatus of the hind limb.

About the third peroneal muscle of the horse

Third peroneal muscle 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 peroneus tertius. 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
The extensor fossa of the femur.
Insertion
The tarsus and the proximal end of the third metatarsal.
Action
Flexes the hock whenever the stifle flexes, as part of the reciprocal apparatus of the hind limb.
Nerve
The deep fibular (peroneal) nerve.

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
Third peroneal muscle
Latin (NAV)
Musculus peroneus tertius
Status
A valid term in the Nomina Anatomica Veterinaria

Questions about the third peroneal muscle

What is the Latin name of the third peroneal muscle?
In the Nomina Anatomica Veterinaria, the third peroneal muscle is called Musculus peroneus tertius.
Where is the third peroneal muscle of the horse?
Third peroneal muscle is a muscle of the back leg (pelvic limb), one on each side of the body.
Where does the third peroneal muscle originate and insert?
Origin: The extensor fossa of the femur. Insertion: The tarsus and the proximal end of the third metatarsal.
What nerve supplies the third peroneal muscle?
The deep fibular (peroneal) nerve.
What does the third peroneal muscle do?
Flexes the hock whenever the stifle flexes, as part of the reciprocal apparatus of the hind limb.

See the third peroneal muscle 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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