Gemelli muscles

Musculi gemelli

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

Rotate the thigh laterally.

About the gemelli muscles of the dog

Gemelli muscles is a muscle of the back leg (pelvic limb), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculi gemelli. Deep to the internal obturator tendon. You can turn it above, see it in place in the back leg of the dog, 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
Lateral border of the ischium, caudal to the acetabulum near the lesser ischiatic notch.
Insertion
Trochanteric fossa, together with the obturator internus tendon.
Action
Rotate the thigh laterally.
Nerve
Sciatic nerve.

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

Terminology

English
Gemelli muscles
Latin (NAV)
Musculi gemelli
Status
A valid term in the Nomina Anatomica Veterinaria

Questions about the gemelli muscles

What is the Latin name of the gemelli muscles?
In the Nomina Anatomica Veterinaria, the gemelli muscles is called Musculi gemelli.
Where is the gemelli muscles of the dog?
Gemelli muscles is a muscle of the back leg (pelvic limb), one on each side of the body.
Where does the gemelli muscles originate and insert?
Origin: Lateral border of the ischium, caudal to the acetabulum near the lesser ischiatic notch. Insertion: Trochanteric fossa, together with the obturator internus tendon.
What nerve supplies the gemelli muscles?
Sciatic nerve.
What does the gemelli muscles do?
Rotate the thigh laterally.

See the gemelli muscles inside the whole dog.

Vetomica opens on this structure with every layer of the dog 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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