Appendicular musculature Flashcards
Rhomboidius minor
Origin-Spinous processes of c7-t1
Insertion-Medial border of scapula
Action-rotate scapula
Rhomboidius major
Origin-Spinous processes of t2-t5
Insertion-Medial border of scapula
Action-Rotate scapula
Pectoralis minor
Origin-Ribs 2-5
Insertion-Coracoid process of scapula
Action- Rotate scapula
Trapezius
Origin-External occipital protuberance, spinous processes of C1-T12
Insertion-Scapular spine, acromion, clavicle
Action- elevates pectoral girdle
Serratus anterior
Origin-ribs
Insertion-Medial border of scapula
Action-protract scapula
Pectoralis major
Origin-clavicle and sternum
Insertion-Greater tubercle of humerus
Action-Adduct and flex shoulder
Latissimus dorsi
Origin-Thoracic and lumbar spinous processes
Insertion-Intertubercular sulcus of humerus
Action-Adduct and extend shoulder
Supraspinatus
Origin-Supraspinous fossa of scapula
Insertion- Greater tubercle of humerus
Action-Abduct shoulder
Infraspinatus
Origin-Infraspinous fossa of scapula
Insertion-Greater tubercle of humerus
Action-Extend and adduct shoulder
Teres minor
Origin-Lateral border of scapula
Insertion-Greater tubercle of humerus
Action-Lateral rotate shoulder
Teres major
Origin-Inferior angle of scapula
Insertion-Lesser tubercle of humerus
Action-Medial rotate shoulder
Subscapularis
Origin-Subscapular fossa
Insertion-Lesser tubercle of humerus
Action-Medial rotate shoulder
Deltoid
Origin-scapular spine, acromion, and clavicle
Insertion-Deltoid tuberosity
Action-Abduct shoulder
Coracobrachialis
Origin-Coracoid process of scapula
Insertion-Medial diaphysis of humerus
Action-Adduct or flex shoulder
Biceps brachii
Origin-Long head:Supraglenoid tubercle (above glenoid cavity)/Short head:coracoid process of scapula
Insertion-Radial tuberosity
Action-Flex elbow, supination
Brachialis
Origin-Anterior diaphysis of humerus
Insertion-Ulnar tuberosity and coronoid process of ulna
Action-Flex elbow
Triceps brachii
Origin-Lateral & Medial heads:Posterior diaphysis of humerus/Long head: Infraglenoid tubercle (below glenoid cavity)
Insertion-Olecranon process of ulna
Action-Extend elbow
Anconeus
Origin-Lateral epicondyle of humerus
Insertion-Olecranon process of ulna
Action-Extend elbow
Brachioradialis
Origin-Lateral supracodylar ridge of humerus (above lateral epicondyle)
Insertion-Styloid process of radius
Action-Flex elbow
Supinator
Origin-Lateral epicondyle of humerus
Insertion-Radius
Action-Supination
Pronator teres
Origin-Medial epicondyle of humerus
Insertion-Radius
Action-Pronation
Pronator quadratus
Origin-Distal ulna
Insertion-Distal radius
Action-Pronation
Flexor carpi radialis
Origin-Medial epicondyle of humerus
Insertion-Metacarpals 2-3
Action-Flex wrist
Palmaris longus
Origin-Medial epicondyle of humerus
Insertion-Palmar aponeurosis
Action-Flex wrist