248875 thorax
TRANSCRIPT
www.Examville.comOnline practice tests, live classes, tutoring, study guides
Q&A, premium content and more.
THORAX THORAX
Thoracic superficial
Thoracic - superficial
Pectoralis major
sternum and clavicle/greater tubercle of humerus
adducts arm
Back muscles• Trapeziusoccipital + vertebrae/clavicle +
scapulaupper div. elevates clavicle; for climbing, elevates scapula Levator scapulaecervical vertebrae/scapulaelevates scapulaRhomboideusthoracic vertebrae/scapulaadducts and fixates scapulaLatissimus dorsivertebrae/humerusdraws arm back Quadratus lumborumiliac crest/12th rib and lumbar vertebraedraws torso R and L inferiorly
Thoracic - deep
Diaphragmribs + lumbar vert./central tendon
inhalation, increases volume of the thoracic cavity
External intercostals adjacent ribs elevates rib cage
in inhalation
Internal intercostals adjacent ribs depresses rib
cage
Pectoralis minor
ribs #3-5 /coracoid of scapula
moves scapula anteriorly, elevates rib cage
-