Lateral head of the triceps muscle of the arm
Musculus triceps brachii caput laterale
Extends the elbow.
- System
- Muscle
- Region
- Thoracic limb
- Sides
- Paired: left and right

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 curved line on the lateral surface of the humerus, from its neck to the deltoid tuberosity.
- Insertion
- The lateral surface of the olecranon.
- Action
- Extends the elbow.
- Nerve
- The radial 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
- Lateral head of the triceps muscle of the arm
- Latin (NAV)
- Musculus triceps brachii caput laterale
- Status
- A valid term in the Nomina Anatomica Veterinaria
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