7 - MOIA (Thorax, Abdominal Wall, Scapula) Flashcards
O: cervical vertebrae
I: 1st & 2nd ribs
A: inspiration; elevate ribs
Scalenes
O: inferior edge of each rib
I: superior edge of next rib below origin
A: inspiration; elevate ribs
External intercostals
O: superior edge of each rib
I: inferior edge of next rib above origin
A: forced expiration; depress ribs
Internal intercostals
O: inferior ribs, sternum, & lumbar vertebrae
I: central tendon of diaphragm
A: inspiration; depress floor of thorax
Diaphragm
O: pubic crest & pubic symphysis
I: xiphoid process & inferior ribs
A: flexes vertebral column; compress abdomen
Rectus abdominis
O: ribs 5-12
I: iliac crest, inguinal ligament, and fascia of rectus abdominis
A: compress abdomen; flex/rotate vertebral column
External abdominal oblique
O: iliac crest, inguinal ligament, & lumbar fascia
I: ribs 10-12 & fascia of rectus abdominis
A: compress abdomen; flex/rotate vertebral column
Internal abdominal oblique
O: costal cartilages 7-12, lumbar fascia, iliac crest, & inguinal ligament
I: xiphoid process, fascia of rectus, abdominis, & pubic tubercle
A: compress abdomen
Transversus abdominis
O: transverse processes of C1-C4
I: superior angle of scapula
A: elevate, retract, & rotate scapula; laterally flexes back
Levator scapulae
O: ribs 3-5
I: coracoid process of scapula
A: depresses scapula or elevates ribs
Pectoralis minor
O: spinous processes T1-T4
I: medial border of scapula
A: retract, rotate, & fixes scapula
Major rhomboid
O: spinous processes T1-T4
I: medial border of scapula
A: retract, slightly elevate, rotate, & fixes scapula
Minor rhomboid
O: ribs 1-9
I: medial border of scapula
A: rotate/protract scapula; elevate ribs
Serratus anterior
O: posterior surface of skull & spinous processes of C7-T12
I: clavicle, acromion processes, and scapular spine
A: elevate/depress/retract/rotate/fixes scapula; extend neck
Trapezius
