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
Axilla It is a narrow space between the chest wall and the pectoral limb containing a large amount of loose connective tissue. This space is crossed by the large vessels and the nerves intended to supply the muscles of the pectoral limb. It corresponds to the armpit of the man. In resting condition, this space
The forelimb is attached to the body by a group of muscles called muscles of the shoulder girdle. These muscles connect the forelimb with the head, neck and trunk. They are as follows Pectoral Muscles Superficial pectoral Cranial superficial pectoral Caudal superficial pectoral Deep pectoral Trapezius Muscle Trapezius cervicis Trapezius thoracis Branchiocephalicus Muscle Omotransversarius muscle Latissimus dorsi muscle Serratus
