Muscle Chart Flashcards
Serratus anterior origin
Lateral parts of rib 1-8
Serratus anterior insertion
Medial border of the scapula
Serratus anterior action
protract the scapula
Hold scapula against thoracic wall
Serratus anterior innervation
Long thoracic n (C5-C7)
Serratus anterior artery
Lateral thoracic a
Superior thoracic a
Subclavius origin
First rib and its cartilage
Subclavius insertion
Inferior surface of the clavicle
Subclavius action
Anchors and depresses clavicle
Subclavius innervation
Nerve to the subclavius C5
Subclavius artery
Clavicular branch of Thoracoacromial a
Pectoralis Major origin
Sternum
Superior 6 costal cartilages
Aponeurosis of external abdominal oblique muscle
Pectoralis Major insertion
Lateral lip of intertubercular sulcus of the humerus
Pectoralis Major action
Flexion, medial rotation, and adduction of the humerus
Pectoralis Major innervation
Clavicular head: Lateral pectoral n (C5-7)
Subcostal head: Medial pectoral n (C8-T1)
Pectoralis Major artery
Pectoral branch of thoracoacromial a
Pectoralis minor origin
Ribs 3-5 near their costal cartilage
Pectoralis minor insertion
Coracoid process of the scapula
Pectoralis minor action
Pull the scapula inferiorly and anteriorly against thoracic wall
Pectoralis minor innervation
Medial pectoral n (C8-T1)
Pectoralis minor artery
Pectoral branch of thoracoacromial a
Supraspinatus origin
Supraspinous fossa
Supraspinatus insertion
greater tubercle of the humerus (highest facet)
Supraspinatus action
Initiates first 10-15 degrees of abduction of the arm
Helps hold humerus into joint
Helps extension of arm
Supraspinatus innervation
Suprascapular n (C4-6)
Supraspinatus artery
Suprascapular a
Infraspinatus origin
Infraspinatus fossa