External obturator muscle
Musculus obturatorius externus
Adducts the thigh and turns it outward.
About the external obturator muscle of the horse
External obturator 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 obturatorius externus. 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 ventral surface of the pelvis around the obturator foramen.
- Insertion
- The trochanteric fossa of the femur.
- Action
- Adducts the thigh and turns it outward.
- Nerve
- The obturator 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
- External obturator muscle
- Latin (NAV)
- Musculus obturatorius externus
- Status
- A valid term in the Nomina Anatomica Veterinaria
Questions about the external obturator muscle
- What is the Latin name of the external obturator muscle?
- In the Nomina Anatomica Veterinaria, the external obturator muscle is called Musculus obturatorius externus.
- Where is the external obturator muscle of the horse?
- External obturator muscle is a muscle of the back leg (pelvic limb), one on each side of the body.
- Where does the external obturator muscle originate and insert?
- Origin: The ventral surface of the pelvis around the obturator foramen. Insertion: The trochanteric fossa of the femur.
- What nerve supplies the external obturator muscle?
- The obturator nerve.
- What does the external obturator muscle do?
- Adducts the thigh and turns it outward.
See the external obturator 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.
