The muscles of trunk

ⅠThe muscles of back 1 The trapezius 2 The latissimus dorsi 3 The erector spinae ( sacrospinalis) 4 The levator scapulae and rhomboideus

external occipital protuberance, superior nuchal line, The trapezius external occipital protuberance, superior nuchal line, C1~C7 spine and T1~T12 spine lateral 1/3 clavicle, acromion and spine of scapular Extend head and move scapular return

spine T6~T12, L, S, thoracolumbar fascia, and iliac crest The latissimus dorsi spine T6~T12, L, S, thoracolumbar fascia, and iliac crest lesser tubercle Shoulder: extend, adduct and medialy rotate return

Spinal column: bend, rotate and extend The erector spinae ( sacrospinalis) Sacrum Spine Spinal column: bend, rotate and extend return

Ⅱ The muscles of thorax pectoralis major Extrinsic muscles pectoralis minor serratus anterior intercostales externi intercostales interni intrinsic muscles

The pectoralis major medial half of the clavicle, the anterior surface of the sternum, the six costal cartilages and the aponeurosis of obliquus externus abdominis the greater tubercle of humerus flexes, adducts and rotate the arm medially return

The serratus anterior external surfaces of the upper 8~9 ribs anterior surface of medial border the scapular hold the scapular against the chest wall, and move the bone return

Ⅲ Diaphragm Name Position Height Content Aortic aperture median T12 abdominal artery thoracic duct Esophageal aperture left T10 Esophagus, vagal nerve Vena cava aperture right T8 inferior vena cava

The muscles of respiration pectoralis major pectoralis minor serratus anterior inspiration intercostales externi diaphragm diaphragm exhalation intercostales interni

Ⅳ the muscles of abdomen Obliquus externus abdominis Obliquus internus abdominis Transversus abdominis Rectus abdominis Anterolateral group Psoas major Quadratus lumborum Posterior group

The sheath of rectus abdominis Anterior layer Posterior layer Section above the arcuate line Anterior layer Posterior layer Section below the arcuate line

Inguinal canal superficial inguinal ring deep inguinal ring 2 openings Anterior : the aponeurosis of obliquus externus abdominis Posterior: transverse fascia Superior: obliquus internus abdominis transversus abdominis Inferior: inguinal ligament 4 walls Male female Spermatic cord The round ligament of uterus content