The pectoralis major muscle is located anteriorly in the thorax and forms much of the anterior wall of the axillary cavity. There is a clavicular head, a sternum-costal head, and an abdominal head. The bundles of the three parts converge outwards and insert with a flattened tendon at the l...
The sternoclavicular joint is a synovial saddle joint and is the only joint that connects the upper limb to the axial skeleton. It connects the clavicle to the manubrium of the sternum and gets stabilization from the costoclavicular ligament. The acromioclavicular joint is a plane synovial joint...
Shoulder blades lie behind and medially to the shoulders, over the rib cage on each side of the spine; together with the clavicles, they form theshoulder girdle. They make joints with the upper arm bones (humerus) and collar bones (clavicle) but not with the ribs and spine.Shoulder blade...
Furthermore, it allows dynamic scanning during joint motion and muscle contraction and assists in guiding minimally invasive interventional procedures. A sound knowledge of its anatomy and the use of a proper scanning technique are essential to perform an accurate shoulder examination with ultrasound. ...
Muscle Main Function TrapeziusElevates and depresses the shoulder and brings together (retracts) the shoulder blades. Deltoid (posterior and middle head)Moves the upper arm sideways (abduction), brings it to the body (adduction), extends it backward and rotates it outwards (external rotation). ...
When you have finished watching this shoulder anatomy video you should have a firm grasp on the bones, muscles, tendons, ligaments, joints, and bursae around the shoulder. Then we can get into particulars about how each can be afflicted to cause you discomfort. ...
pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor. ...
Whether you’re a beginner or advanced lifter, these exercises will help you pack on muscle and increase your shoulder strength quickly. Before we get into the exercises, let’s take a quick look at your shoulder muscles. Shoulder Muscle Anatomy ...
armUpper ArmThe arm, or “upper arm” in common usage, is the region of the upper limb that extends from the shoulder to the elbow joint and connects inferiorly to the forearm through the cubital fossa. It is divided into 2 fascial compartments (anterior and posterior).Arm: Anatomy ...
and is anatomically divided into three parts by the pectoralis minor muscle, providing a useful way to conceptualize its course. The first part (proximal to pectoralis minor) has one branch, the second part (beneath pectoralis minor) has two branches, and the third part (distal to pectoralis ...