Where on the body is the deltoid?
Hope this helps : from my old Biology Notes! The deltoideus muscle (also called the deltoids) is made of three main sections called the anterior deltoid, medial deltoid, and posterior deltoid. These three muscle parts have insertions in many different places including the humerus, clavicula, coronoid process, spina scapulae, scapula and acromion. The deltoideus, along with the prominence of the upper end of the humerus bone, produces the rounded contour of the shoulder. It’s rounder and fuller in front than behind, where it presents a flatter form. The insertion of the deltoideus is marked by a depression on the lateral side of the middle arm. The deltoideus is supplied by the fifth and sixth cervical through the axillary nerve. Special Note: The deltoid is a different type of muscle than some of those found throughout the rest of the body. The delts are made of three pennate muscles making the deltoid a multipennate muscle group. A pennate muscle proportionately moves heavier loads th
