Infraspinatus muscle
Musculus infraspinatus
To abduct the arm and rotate it outward. It also acts as a lateral ligament.
About the infraspinatus muscle of the horse
Infraspinatus muscle is a muscle of the front leg (thoracic limb), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus infraspinatus. You can turn it above, see it in place in the front 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 infraspinous fossa and the scapular cartilage.
- Insertion
- (1) The lateral tuberosity of the humerus, distal to the lateral insertion of the supraspinatus; (2) the posterior eminence of the lateral tuberosity.
- Action
- To abduct the arm and rotate it outward. It also acts as a lateral ligament.
- Nerve
- The suprascapular 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
- Infraspinatus muscle
- Latin (NAV)
- Musculus infraspinatus
- Status
- A valid term in the Nomina Anatomica Veterinaria
The infraspinatus muscle in other animals
The same structure in the other animals in the Library, to compare.
Questions about the infraspinatus muscle
- What is the Latin name of the infraspinatus muscle?
- In the Nomina Anatomica Veterinaria, the infraspinatus muscle is called Musculus infraspinatus.
- Where is the infraspinatus muscle of the horse?
- Infraspinatus muscle is a muscle of the front leg (thoracic limb), one on each side of the body.
- Where does the infraspinatus muscle originate and insert?
- Origin: The infraspinous fossa and the scapular cartilage. Insertion: (1) The lateral tuberosity of the humerus, distal to the lateral insertion of the supraspinatus; (2) the posterior eminence of the lateral tuberosity.
- What nerve supplies the infraspinatus muscle?
- The suprascapular nerve.
- What does the infraspinatus muscle do?
- To abduct the arm and rotate it outward. It also acts as a lateral ligament.
See the infraspinatus 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.
