Anterior Axioappendicular Muscles Flashcards
Pec maj sternocostal head medial attachment?
Anterior surface of sternum
Superior six costal cartilages
Aponeurosis of external oblique muscle
Pectoralis major( clavicular head) medial attachment?
Anterior surface of medial half of clavicle
Pec major lateral attachment ?
Lateral lip of intertubercular sulcus of the humerus
Pec major intervation?
Lateral and medial pectoral nerves Clavicular head (c5,c6) Sternocostal head( c7, c8, t1)
Pec major actions? Together
Adducts and medially rotates humerus
Draws scapula anteriorly and inferiorly
Pec maj actions alone?
Claviclar head flexes humerus
Sternocostal head extends it from flexed position
Pectoralis minor medial attachment
3rd-5th ribs near their costal castilages
Pec min lateral attachment
Medial border and superior surface of coracoid process of scapula
Pec min intervation
Medial pectoral nerve c8 t1
Pec min action
Stab scapula by drawing it inferiorly and anteriorly against thoracic wall
Subclavius medial attachment
Junction of the first castal and it’s cartilage
Subclavius lateral attachment ?
Inferior surface of middle third of clavicle
Subclavius intervention
Subclavian nerve c5 c6
Subclavian action
Anchors and depresses clavicle
Serratus anterior medial attachment
External surfaces of lateral parts of 1st-8th ribs
Serratus anterior lateral attachment
Anterior surface of the medial border of scapula
Serratus anterior intervention
Long thoracic nerve c5 c6 c7
Serratus anterior action
Protracts scapula and holds against thoracic wall
Rotates scapula
What muscles move the pectoral girdle?
Anterior axioappendicular- pec majo, pec minor, subclavius , and Sarratus anterior
