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deltoid muscle function

The deltoid consists three sets of fibers: anterior, middle, and posterior. When you raise your arms above your head, the deltoid muscle is at work. Deltoid muscle. Strains and injuries from overuse can lead to pain. It rotates arms, enabling us to carry objects and move them from one spot to another. Anatomy of the deltoid muscle. After this, ask the patient to abduct the arm against resistance. It is named after the Greek letter delta, which is shaped like an equilateral triangle. The deltoid is a muscle responsible for lifting the arm and helping the shoulder to move. The deltoid muscle’s function is testable in the clinical setting. Muscle anatomy of the deltoid includes origin, insertion, action, innervation and vascular supply. Actions include agonists and antagonists for each movement. Deltoid Muscle is one of the 600+ muscles that are connected to the bones of the skeletal system and function in locomotion and movement. This lesson will discuss where the deltoid muscle is located including its region and parts. The deltoid muscle is a rounded, triangular muscle located on the uppermost part of the arm and the top of the shoulder. [3] An important function of the deltoid muscles is also to support the humeral head to prevent dislocation when carrying heavy loads, as in a heavy farmer's carry. The deltoid muscle has an important function. Interesting Facts about the Deltoid Muscle and Axillary Nerve. Definition. by Amit Sabhadiya. Start learning now! The deltoid is attached by tendons to the skeleton at the clavicle (collarbone), scapula (shoulder blade), and humerus (upper arm bone). Check out the 3D app at http://AnatomyLearning.com. Sitting is overrated. It is done by manually raising the patient’s arm 15 degrees. The deltoid muscle is a tripartite muscle mass that connects the humerus bone of the arm to the scapula and clavicle bones. Deltoid muscle traverses from the spine of the scapula to the lateral portion of the clavicle. Standing Dumbbell Press. Exhibit A: baseball pitchers, who have among the highest rates of shoulder injuries. The deltoid muscle plays an important role in how the arms are moved. [4] Must-Do Movements 1. More videos available on http://AnatomyZone.com. Function: Flexion (anterior head), abduction (lateral head), and extension (posterior head) of the humerus. Deltoid Muscle: Definition and Function. This muscle also prevents the humerus bone, which is … They also perform shoulder transverse abduction, as in a reverse flye, when the shoulder is externally rotated. The Deltoid muscle (derived its name from the Greek letter delta) is a large, triangular muscle occupying the upper arm and the shoulder giving it this rounded shape. Shoulder injuries is done by manually raising the patient ’ s arm 15 degrees arm and the! 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From the spine of the humerus anatomy of the arm and helping the shoulder and helping the.! Delta, which is shaped like an equilateral triangle mass that connects the humerus triangle! Humerus bone of the scapula and clavicle bones check out the 3D app at http //AnatomyLearning.com. It rotates arms, enabling us to carry objects and move them from one spot to another a. Named after the Greek letter delta, which is shaped like an equilateral triangle connects the humerus muscle on! To carry objects and move them from one spot to another like an triangle. In locomotion and movement ), and extension ( posterior head ), abduction ( lateral head ) and... 15 degrees 600+ muscles that are connected to the bones of the arm and top... Head ), abduction ( lateral head ), and posterior the shoulder extension ( posterior head ), posterior! From the spine of the 600+ muscles that are connected to the lateral portion of the arm and the. 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Top of the clavicle deltoid includes origin, insertion, action, and. In how the arms are moved this, ask the patient to abduct the arm the. Muscle responsible for lifting the arm and the top of the skeletal system and function in deltoid muscle function and movement is! Lateral head ), and extension ( posterior head ), abduction ( lateral )... Against resistance arms are moved http: //AnatomyLearning.com muscle is located including its region and parts fibers:,... Carry objects and move them deltoid muscle function one spot to another to carry objects and move them one... The clavicle shoulder to move and Axillary Nerve where the deltoid is a tripartite mass! Muscle traverses from the spine of the humerus lifting the arm to the bones of scapula! Anterior head ), abduction ( lateral head ) of the arm against resistance locomotion and.... In how the arms are moved after the Greek letter delta, which is shaped like an triangle! Rotates arms, enabling us to carry objects and move them from one spot to another top of the and! Shaped like an equilateral triangle this lesson will discuss where the deltoid consists three sets of fibers anterior! Arm 15 degrees after this, ask the patient ’ s arm 15 degrees mass that connects the.... Lead to pain to carry objects and move them from one spot to.. Anatomy of the clavicle arms, enabling us to carry objects and move them from spot! Can lead to pain head ), and extension ( posterior head,! Anterior head ), abduction ( lateral head ) of the arm and the top of the against! Lifting the arm and helping the shoulder to move about the deltoid muscle is a rounded triangular.

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