Appendicular Muscles Flashcards
What is the origin, insertion, and action of the trapezius
Origin-occipital bone, ligamentum nuchae, and spinous processes of thoracic vertebrae
Insertion-clavicle and scapula(acromion and scapular spine)
Action-depends on active region and state of other muscles; may (1)elevate, retract, depress, or rotate scapula upward, (2)elevate clavicle, or (3)extend neck
What is the origin, insertion, and action of the deltoid
Origin:axial skeleton and pectoral girdle
Insertion:humerus
Action:whole muscle-abduction at shoulder; anterior part:flexion and medial rotation; posterior part:extension and lateral rotation
What is the origin, insertion, and action of the supraspinatus
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-abduction at shoulder
What is the origin, insertion, and action of the subscapularis
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-medial rotation at shoulder
What is the origin, insertion, and action of the infraspinatus
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-lateral rotation at shoulder
What is the origin, insertion, and action of the teres minor
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-lateral rotation at shoulder
What is the origin, insertion, and action of the pectoralis major
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-flexion, adduction, and medial rotation at shoulder
What is the origin, insertion, and action of the latissimus dorsi
Origin-axial skeleton and pectoral girdle
Insertion-humerus
Action-extension, adduction, and medial rotation at shoulder
What are the rotator cuff muscles
supraspinatus, subscapularis, infraspinatus, teres minor
What muscle flexes the arm and what muscle is the extensor of the arm
Biceps brachii flexes and triceps brachii extends
What is the origin, insertion, and action of the biceps brachii
Origin-pectoral girdle and humerus
Insertion-radius and ulna
Action-flexion at elbow and shoulder, supination
What is the origin, insertion, and action of the triceps brachii
Origin-pectoral girdle and humerus
Insertion-radius and ulna
Action-extension at elbow, plus extension and adduction at the shoulder
What is the origin, insertion, and action of the pronator quadratus
Origin-pectoral girdle and humerus
Insertion-radius and ulna
Action-pronation
What is the origin, insertion, and action of the pronator teres
Origin-pectoral girdle and humerus
Insertion-radius and ulna
Action-pronation
What is the origin, insertion, and action of the supinator
Origin-pectoral girdle and humerus
Insertion-radius and ulna
Action-supination
What is the origin, insertion, and action of the flexor carpi radialis
Origin-humerus
Insertion-metacarpals
Action-flexion and abduction at wrist
What is the origin, insertion, and action of the flexor carpi ulnaris
Origin-humerus
Insertion-metacarpals
Action flexion and adduction at wrist
What is the origin, insertion, and action of the extensor carpi radialis longus
Origin-humerus
Insertion-metacarpals
Action-extension and abduction at wrist
What is the origin, insertion, and action of the extensor carpi radialis brevis
Origin-humerus
Insertion-metacarpals
Action-extension and abduction at wrist
What is the origin, insertion, and action of the extensor carpi ulnaris
Origin-humerus
Insertion-metacarpals
Action-extension and adduction at wrist
What is the origin, insertion, and action of the extensor digitorum
Origin-radius and ulna
Insertion-phalanges
Action extension at finger joints and wrist