Where it is
Over the shoulder joint, from the shoulder blade to the humerus.
- Layer
- Muscles
- System
- Muscles
- Region
- Forelimb
What it is and what it does
In the dog it has two parts, scapular and acromial. It arises from the spine and the acromion of the scapula and inserts on the deltoid tuberosity of the humerus. It flexes the shoulder joint and raises the humerus.
It is one of the four muscles on the lateral surface of the scapula. Its two parts arise one from the spine of the scapula, the other from the acromion, and meet on the deltoid tuberosity of the humerus; in the horse, which has no acromion, the acromial part is missing. It is supplied by the axillary nerve.
Worth remembering
It bends the shoulder and raises the bone of the upper arm.
Names
- Latin term: musculus deltoideus.
- In Romanian: Deltoidul (Romanian page).