Greater psoas muscle
Musculus psoas major
Flexes the hip and turns the thigh out; with the limb fixed it flexes the loins.
About the greater psoas muscle of the horse
Greater psoas muscle is a muscle of the body (trunk), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus psoas major. You can turn it above, see it in place in the body 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 transverse processes of the lumbar vertebrae and the last ribs.
- Insertion
- The lesser trochanter of the femur.
- Action
- Flexes the hip and turns the thigh out; with the limb fixed it flexes the loins.
- Nerve
- Ventral branches of the lumbar nerves.
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
- Greater psoas muscle
- Latin (NAV)
- Musculus psoas major
- Status
- A valid term in the Nomina Anatomica Veterinaria
Questions about the greater psoas muscle
- What is the Latin name of the greater psoas muscle?
- In the Nomina Anatomica Veterinaria, the greater psoas muscle is called Musculus psoas major.
- Where is the greater psoas muscle of the horse?
- Greater psoas muscle is a muscle of the body (trunk), one on each side of the body.
- Where does the greater psoas muscle originate and insert?
- Origin: The transverse processes of the lumbar vertebrae and the last ribs. Insertion: The lesser trochanter of the femur.
- What nerve supplies the greater psoas muscle?
- Ventral branches of the lumbar nerves.
- What does the greater psoas muscle do?
- Flexes the hip and turns the thigh out; with the limb fixed it flexes the loins.
See the greater psoas 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.
