Arm Muscles Flashcards
Trapezius (origin, insertion, action, location)
Origin: Vertebrae, clavicle, occipital bone
Insertion: Acromion, spine of scapula
Action:
Location: Shoulder/back
Rhomboids (origin, insertion, action, location)
Origin: Vertebrae
Insertion: Scapula
Action: Retraction
Location: Back
Levator Scapulae (origin, insertion, action, location)
Origin: Transverse process of cervical vertebrae
Insertion: Scapular angle
Action: Elevation
Location: Neck/shoulder
Serratus Anterior (origin, insertion, action, location)
Origin: Ribs
Insertion: Scapula
Action: Protraction
Location: Shoulder/ribs
Pectoralis Minor (origin, insertion, action, location)
Origin: Ribs
Insertion: Coracoid process
Action: Depression
Location: Ribs
Infraspinatus (origin, insertion, action, location)
Origin: Infraspinous fossa
Insertion: Greater tubercle
Action: Arm rotation
Location: Shoulder
Supraspinatus (origin, insertion, action, location)
Origin: Supraspinous fossa
Insertion: Greater tubercle
Action: Arm abduction
Location: Shoulder
Teres Minor (origin, insertion, action, location)
Origin: Infraspinous fossa
Insertion: Greater tubercle
Action: Arm rotation
Location: Shoulder
Subscapularis (origin, insertion, action, location)
Origin: Subscapular fossa
Insertion: Lesser tubercle
Action: Rotates humerus
Location: Shoulder
Deltoid (origin, insertion, action, location)
Origin: Spine, acromion, clavicle
Insertion: Deltoid tuberosity
Action: Shoulder abduction, flexion, and extension
Location: Upper arm
Pectoralis major (origin, insertion, action, location)
Origin: Sternum, clavicle
Insertion: Humerus
Action: Flexion and extension
Location: Chest/upper arm
Latissimus Dorsi (origin, insertion, action, location)
Origin: Vertebrae, ilium
Insertion: Humerus
Action: Adduction, extension, rotation
Location: Back
Coracobrachialis (origin, insertion, action, location)
Origin: Coracoid process
Insertion: Humerus
Action: Adduction and flexion
Location: Upper arm
Teres Major (origin, insertion, action, location)
Origin: Scapula
Insertion: Humerus
Action: Adduction and extension
Location: Back
Biceps Brachii (origin, insertion, action, location)
Origin: Coracoid process
Insertion: Radial tuberosity, ulna
Action: Flexion, adduction, supination
Location: Upper arm
Triceps Brachii (origin, insertion, action, location)
Origin: greater tubercle, humerus
Insertion: Olecranon
Action: Extension and adduction
Location: Upper arm
Brachioradialis (origin, insertion, action, location)
Origin: Humerus
Insertion: Styloid process of radius
Action: Elbow flexion and supination
Location: Elbow
Brachialis (origin, insertion, action, location)
Origin: Humerus
Insertion: Coronoid process of ulna
Action: Elbow flexion
Location: Elbow
Supinator (origin, insertion, action, location)
Origin: Lateral epicondyle
Insertion: Radius
Action: Supination
Location: Lower arm/elbow
Pronator Teres (origin, insertion, action, location)
Origin: Medial epicondyle
Insertion: Radius
Action: Pronation
Location: Lower arm/elbow
Pronator Quadratus (origin, insertion, action, location)
Origin: Ulna
Insertion: Radius
Action: Pronation
Location: Lower arm
Opponens pollicus
Origin: trapezium
Insertion: metacarpal bone of thumb
Abductor pollicus brevis
Origin: scaphoid and trapezium
Insertion: proximal phalanx of thumb
Flexor digiti minimi brevis
Origin: hamate
Insertion: proximal phalanx of minimi
