MOINA thorax

external intercostals origin

inferior border of ribs

external intercostals insertion

superior border of ribs

external intercostals action

elevates rib cage

internal intercostals origin

superior border of ribs

internal intercostals insertion

inferior border of ribs

internal intercostals action

depresses rib cage

external oblique origin

ribs 5-12

external oblique insertion

linea alba, pubic crest, pubic tubercle, iliac crest

external oblique action

flexes vertebral column, compresses abdominal wall

internal oblique origin

lumbar fascia, iliac crest, inguinal ligament

internal oblique insertion

linea alba, pubic crest

internal oblique action

flexes vertebral column, compresses abdominal wall

rectus abdominis origin

pubic crest, pubic symphysis

rectus abdominis insertion

xiphoid process, ribs 5-7

rectus abdominis action

flexes lumbar region of vertebral column, rotates lumbar region of vertebral column

pectoralis minor origin

ribs 3-5

pectoralis minor insertion

coracoid process of scapula

pectoralis minor nerve supply

medial pectoral nerve from brachial plexus

pectoralis minor action

depresses and downwardly rotates scapula

serratus anterior origin

ribs 1-8

serratus anterior inserion

medial borer and inferior angle of scapula

serratus anterior nerve supply

long thoracic nerve

serratus anterior action

rotates inferior border of scapula