Brachialis Muscle Anatomy The brachialis (brachialis anticus) is a muscle in the upper arm that flexes the elbow joint. It is the prime mover of elbow flexion. The brachialis actually generates about 50% more power and is thus the prime mover of elbow flexion. The brachialis is deeper than the biceps brachialis muscle and is…
Biceps brachii muscle Anatomy Biceps brachii is a two-headed muscle that lies on the upper arm between the shoulder and the elbow. Both heads arise on the scapula and join to form a single muscle belly which is attached to the upper forearm. “Capulets breve” is another term for the short head, and “capulets longum”…
Coracobrachialis Muscle Anatomy The coracobrachialis muscle is the smallest of the three muscles that start from the coracoid process of the scapula. It is located at the upper and medial part of the arm (superomedial part of the humerus- Anterior Compartment of the Arm). Muscle details The contraction of the coracobrachialis leads to two movements…
Teres major Muscle Anatomy The teres major muscle is one of the six muscles within the scapulohumeral muscle group. This muscle is commonly confused as a rotator cuff muscle, but it is not because it does not attach to the capsule of the shoulder joint, unlike the teres minor muscle. Origin : It originates from…
Teres Minor Muscle Anatomy The teres minor is a slim, narrow muscle within the rotator cuff, located in the shoulder. It also contributes to the rotator cuff, a capsule of muscles and tendons that collectively stabilize the glenohumeral joint. Origin It originates from the lateral border and adjacent posterior surface of the scapula. Insertion It…
Supraspinatus Muscle Anatomy The supraspinatus is a relatively small muscle of the upper back that runs from the supraspinatous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. Supraspinatus with the other three muscles join to grouping rotator cuff and abduction of the shoulder joint is done. The spine…
Rhomboid Minor Muscle Anatomy The Rhomboid minor is a small skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column. Along with the Rhomboid major, it keeps the scapulae pressed against the thoracic wall. Origin It originates from, Insertion It inserts into a small area of the medial border…
Levator Scapulae Muscle Anatomy The levator scapulae muscle is a long muscle of the shoulder girdle. It is situated at the back and the side of the neck, and as its name suggests – its main function is to lift the scapula. The position of the muscle defines its supportive role in the vertebral column….
Latissimus dorsi Muscle Anatomy Latissimus Dorsi is a large, flat triangular muscle that covers a large area of the lower back and is overlapped by the trapezius. It is also known as the Broadest muscle of the back. The muscle runs between the trunk, via an extensive attachment and the humerus by a narrow tendon….
Trapezius Muscle Anatomy The trapezius (or trapezoid) is a large paired surface muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae of the spine and laterally to the spine of the scapula. It moves the scapula and supports the arm. The descending (superior), ascending (inferior), and middle sections make up the…
