Muscles (muscular system)

Subclavian muscle

The subclavian muscle (m. Subclavius) is of small size, occupying a slit-shaped gap between the first rib and the clavicle. It begins on the cartilage of the 1st rib, passes laterally and is attached to the lower surface of the acromial end of the clavicle.

Small pectoralis muscle

The small pectoral muscle (m. Pectoralis minor) is flat, triangular in shape, located directly behind the large pectoral muscle. The muscle begins on the II-V ribs, near their anterior ends. Heading upwards and laterally, it is attached by a short tendon to the coracoid process of the scapula.

Large pectoralis muscle

The large pectoral muscle (m. Pectoralis major) is massive, fan-shaped, occupying a considerable part of the anterior wall of the thoracic cavity.

Muscles of the chest

The muscles of the chest are arranged in several layers. More superficially lie those muscles that develop in connection with the laying of the upper limb. They connect the upper limb with the thorax. These include the large thoracic and anterior cog muscles.

Belt muscle of the neck

The neck muscle of the neck (m. Splenius cervicis) begins on the spinous processes of III-IV thoracic vertebrae. It is attached to the posterior tubercles of the transverse processes of two or three upper cervical vertebrae.

Belly muscle of head

The belt muscle of the head (m. Splenitis capitis) lies anterior to the upper part of the sternum-mastoid and trapezius muscles. It begins on the lower half of the ligamentous ligament (below the level of the IV cervical vertebra), on the spinous processes of the 7th cervical and the upper three to four thoracic vertebrae.

Upper and lower posterior jagged muscles

To the ribs are attached two thin flat muscles - upper and lower posterior jagged.

Small and large diamond-shaped muscles

Small and large rhomboid muscles (mm. Rhomboidei minor et major) often coalesce and form one muscle. A small rhomboid muscle begins on the lower part of the nuchal ligament, the spinous processes of the VII cervical and 1st thoracic vertebrae and on the bony bundle.

Muscle lifting shoulder blade

The muscle lifting the scapula (m. Levator scapulae) begins with tendon bundles on the posterior tubercles of the transverse processes of the upper three or four cervical vertebrae (between the attachment of the middle staircase in the front and the neck muscle in the back).

The widest back muscle

The widest muscle of the back (m. Latissimus dorsi) is flat, triangular in shape, occupying the lower half of the back on the corresponding side. The widest muscle of the back lies superficially, with the exception of the upper edge, which is hidden beneath the lower part of the trapezius muscle.

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