muscles of thorax Flashcards
pectoralis major origen
clavicle, sternum, costal cartilage of ribs 1-6
pectoralis major insertion
intertubricular groove of humerus
pectoralis major action
ADduct shoulder, flexion, medial rotation
pectoralis major nerve suply
medial and lateral pectoral nerves
pectoralis minor origen
ribs 3-5
pectoralis minor insertion
caracoid process of scapula
pectoralis minor action
depress scapula, elevate ribs
pectoralis minor nerve suply
medial pectoral nerve
serratus anterior origen
ribs 1-8
serratus anterior insertion
medial border of scapula
serratus anterior action
protracts scapula
serratus anterior nerve suply
long thoracic nerve
EXTERNAL intercostal origen
inferior border of rib
EXTERNAL intercostal insertion
superior border of rib
EXTERNAL intercostal action
elevate ribs