Deltoids Anatomy

Each head of the deltoid has slightly different insertion points. It is named after the greek letter delta which is shaped like an equilateral triangle.

Royalty Free Deltoid Muscle Stock Images Photos Vectors

Cause learning muscle anatomy can be fun.

Deltoids anatomy. Anterior border of the lateral third of the clavicle. Lateral or acromial fibers arise. Deltoids anatomy guide the deltoid is a single joint muscle because it crosses only the shoulder joint.

Conditions associated with the deltoid often are related to injury. The deltoid tuberosity on the lateral surface of the proximal humeral shaft. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and socket.

The deltoid is attached by tendons to the skeleton at the clavicle collarbone scapula shoulder blade and humerus upper arm bone. The deltoid muscle divides into three distinct parts anterior lateral and posterior. Previous studies showed that the insertion of the intramuscular tendons of the deltoid muscle formed three discrete sets of muscle fibers often referred to as heads.

When all three parts contracts simultaneously the deltoid will assist in abducting the arm past 15 degrees 9. Abduction of the arm at the shoulder. Deltoid muscle cannot initiate abduction because the direction of pull of the deltoid muscle is parallel to the axis of the humerus.

Deltoids anatomy when most people think of the shoulder anatomy they think of the deltoids. As mentioned earlier the deltoid muscle plays a large role in the gross movements. The acromion is a bony projection off the scapula.

The clavicle collarbone meets the acromion in the acromioclavicular joint. The clavicular anterior part. Learn about the deltoid its origin insertion and action and all the fun facts in between.

And with new paints this time. The deltoid muscle is a rounded triangular muscle located on the uppermost part of the arm and the top of the shoulder. On the other hand because of its various heads you can work this muscle from plenty of angles by raising your arms in front of you overhead laterally and posteriorly.

The very broad origin of the deltoid actually means that functionally the muscle can be broken down into three separate parts. The spinal posterior part. Other important bones in the shoulder include.

The main muscle of the shoulder anatomy. The acromial middle part. This is because the deltoids are what you would consider the major muscles of the shoulder anatomy.

Theyre the muscles you see when you roll up your t shirt sleeve or wear a wife beater. The anterior or clavicular fibers arise from most of the anterior border and upper surface. Axillary nerve c5 c6.

Deltoid Pain Causes Exercises And Relief