Muscles of Arm region group consists of muscles, which are grouped around the Humerus. Some arise from the scapula and others from the Humerus and all are inserted to the forearm. They are as follows Biceps brachii Triceps brachii Long head (Caput longum tricipitis) Lateral head (Caput parvum tricipitis) Medial head (Caput medium tricipitis) Tensor […]

Lateral group of muscles of Shoulder region – Deltoideus   Supraspinatus Infraspinatus Teres minor Deltoideus This muscle lies at the scapulo-humoral angle, partly on the triceps and partly on the infraspinatus. It consists of two parts, acromial and scapular, which are placed one above the other and are separated by an interval Origin: Acromial part – Acromion process and scapular fascia Scapular part

Medial group of muscles of Shoulder region – Teres major Subscapularis Coraco brachialis Teres Major This is a flat, long muscle extends obliquely downwards and forwards between the dorsal angle of the scapula and the arm. It lies behind the subscpularis and on the medial face of the long and medial heads of the triceps

The muscles of the shoulder are divided into two groups viz., Medial group Teres major Subscapularis Coraco brachialis Lateral group Deltoideus Supraspinatus Infraspinatus Teres minor

Rhomboideus muscle extends from ninth to tenth dorsal vertebra to about the level of the middle of the funicular part of the ligamentum nuchae. It is under the cover of trapezius and consists of cervical (rhomboideus cervicis) and dorsal (rhomboideus thoracis) parts Origin: Ligamentum nuchae, and the spines of dorsal vertebrae from the first to about seventh

The serratus ventralis muscle is a large fleshy muscle placed on the lateral side of the neck and thorax and is named as serratus thoracis and serratus cervicis according to the region covered. Serratus cervicis It is a large, thick muscle extends from the level of the second cervical vertebra to the fifth rib. The posterior

Latissimus dorsi muscle is a very wide muscle extending on the lateral wall of the thorax from the dorso-lumbar spine to the arm. It has an aponeurotic origin, which is succeeded by a wide muscular portion. Origin: Lumbodorsal fascia, 11 th and 12 th ribs and fascia over the intercostal and external oblique muscles. Insertion: The anterior

Omotransversarius muscle muscle extends from the level of the atlas to the shoulder and most part covered by the preceding muscle except at the scapular portion where it is seen as a broad

Branchiocephalicus Muscle muscle extends from the head, along the neck to the arm. Its upper border is in close apposition with the trapezius and the lower border forms the upper boundary of the jugular furrow. It consists of a dorsal part (cleido-occipitalis) and a ventral part (cleido-mastoideus), the division being indicated by the position of exit

Trapezius Muscle is a broad triangular muscle extending along the dorsal midline from the level of atlas to the end of the thoracic region, and covers a part of the shoulder. It consists of cervical (trapezius cervicis) and dorsal(trapezus thoracis) parts. Origin: Ligamentum nuchae and supraspinous ligament from the level of the atlas to the twelfth dorsal vertebra. Insertion: The tuberous part