Bones. Appendicular Skeleton. The Skeleton. Coracoid Process. Acromion Process Coracoid Process. Acromion Process. Glenoid Fossa

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1 Bones The Skeleton Appendicular Skeleton Acromion Process Coracoid Process Coracoid Process Acromion Process Glenoid Fossa Subscapular Fossa Lateral Boarder Glenoid Fossa Lateral Boarder Medial Boarder Inferior Angle Inferior Angle Greater Tuberosity Coracoid Process Acromion Process Superior Angle Lesser Tuberosity Glenoid Fossa Infraspinous Fossa Supraspinous Fossa Scapular Spine Medial Boarder Bicipital Groove Shaft Lateral Boarder Capitulum Coronoid Fossa Olecranon Fossa

2 Greater Tuberosity Lesser Tuberosity Bicipital Groove Olecranon Process Coranoid Process r Notch Radial Notch Radial Tuberosity Shaft Ulna Radius Capitulum Coronoid Fossa Olecranon Fossa of Ulna of Radius Olecranon Process Coranoid Process r Notch Radial Notch Radial Tuberosity Carpals Scaphoid Lunate Triquetrum Pisiform Hamate Capitiate Trapezoid Trapezium Left Hand Anterior View Metacarpals Ulna Seasmoid Bone Radius Phalanges I of Ulna of Radius V IV III II Middle phalanx Carpals Scaphoid Lunate Triquetrum Pisiform Hamate Capitiate Trapezoid Trapezium Left Hand Anterior View Some Lovers Metacarpals Tried Seasmoid Bone Positions Phalanges V IV III II I Middle phalanx That They Can t Handle

3 MUSCLES ACTING ON THE HUMERUS - attached on body Muscles of the Shoulder Name: Latissimus Dorsi Muscles Naming posterior ilium, sacrum, vertebral spines of T 7 -T 12, L1-5 floor of bicipital groove between pectoralis major and teres major adducts, medially rotates humerus Name: Pectoralis Major MUSCLES ACTING ON THE HUMERUS - attached on scapula medial 1/2 clavicle, sternum, costal cartilages 1-6 Name: Deltoid (3 Portions) lateral lip of bicipital groove A - lateral third of clavicle M - acromion process of scapula P - spine of scapula flexes, adducts, medially rotates shoulder Deltoid tuberosity ALL - abduction of humerus A - flexion, internal rotation P - extension, external rotation Name: Teres Major lateral border of scapula medial lip of bicipital groove adducts, medially rotates humerus MUSCLES OF THE ROTATOR CUFF Name: Supraspinatus supraspinatus fossa of scapula top of greater tuberosity abduction of humerus

4 Name: Subscapularis subscapular fossa lesser tuberosity medial rotation, adduction of humerus Name: Infraspinatus infraspinous fossa of scapula posterior greater tuberosity lateral rotation, extension of humerus Name: Teres Minor lateral border of scapula lower posterior greater tuberosity lateral rotation, extension and adduction "Sub Terrain Lunches Put Sickness In Tummies" x

5 Muscles of the Arm ELBOW FLEXORS AND EXTENSORS Name: Biceps Brachii 1. coracoid process 2. top of glenoid fossa tuberosity of radius elbow flexion, shoulder flexion, supination Name: Brachialis lower 2/3 anterior humerus coronoid process of ulna elbow flexion, (partial supination and pronation) Name: Brachioradialis above lateral epicondyle of humerus styloid process on the radius elbow flexion (primarily when arm is between supination and pronation) Name: Triceps Brachii 1. just under glenoid fossa 2. upper posterior humerus 3. lower posterior humerus olecranon process elbow extension some shoulder extension Name: Annconeus back of lateral epicondyle of humerus olecranon process upper posterior ulna - elbow extension - puts tension of synovium to prevent pinching - abducts ulna in pronation SUPINATORS AND PRONATORS OF FOREARM Name: Pronator Teres medial epicondyle of humerus coronoid of ulna outer surface middle radius pronation, elbow flexion Name: Pronator Quadratus lower front of ulna lower front of radius pronation

6 Name: Supinator lateral supracondylar ridge of humerus, upper lateral ulna Naming Muscles #2 outer surface upper radius supination MUSCLES OF THE WRIST JOINT, HAND AND FINGERS Name: Flexor digitorum superficialis (sublimis) Origin - medial epicondyle, - anterior, proximal radius and ulnar side of middle phalanges of fingers (tendons split into 2) flex fingers flex elbow Name: Flexor carpi radialis Medial epicondyle base of palmar surface of metacarpals 2 and 3 flex forearm abducts wrist Name: Flexor carpi ulnaris medial epicondyle base of palmar surface of metacarpal 5 flex forearm adducts wrist Name: Flexor digitorum profundus (deep) anterior, proximal 2/3 of ulna palmar surface of distal phalanges flex fingers

7 Name: Extensor digitorum (communis) lateral epicondyle base of middle and distal phalanx of fingers extend fingers extend wrist extend elbow Name: Extensor carpi radialis lateral epicondyle base of dorsal surface of metacarpals 2 and 3 extend wrist extend forearm abducts hand Name: Extensor carpi ulnaris - lateral epicondyle - posterior, proximal ulna 5th metacarpal extends wrist adducts hand Name: Flexor pollicis longus anterior middle radius (and interosseus membrane) palmar surface of distal thumb flex thumb Name: Extensor pollicis longus posterior ulna palmar surface of distal thumb extends thumb extends wrist