The Upper Extremity

THE UPPER EXTREMITY

DO NOW

• List as many muscles in the arm as you can

DO NOW #2

• Give as many bones of the arm (elbow and up) as possible

HOMEWORK REVIEW

• Pg. 202 #15-17

HOMEWORK

• Read 209-210• Possibly, maybe, a tiny quiz to start the class (Pay

attention to pictures)• Create flash cards for all muscles covered today

in class• Deltoid• Pectoralis Major• Biceps Brachii• Rotator Cuff

SHOULDER

• Landmarks of the shoulder• Coracoid Process• Acromioclavicular joint• Greater Tubercle of Humerus• Lesser tubercle of Humerus• Deltoid Tuberosity

SHOULDER

MUSCLES OF THE SHOULDER

• Deltoid• Pectoralis Major• Biceps Brachii• Rotator Cuff• Supraspinatus• Infraspinatus• Subscapularis• Teres Major

DELTOID

• Origin: Lateral 1/3 of the clavicle; acromion and spine of scapula• Insertion: Deltoid tuberosity of humerus• Action: Prime mover of arm abduction; some

flexion and extension of shoulder

DELTOID

PECTORALIS MAJOR

• Origin: clavicle, sternum and cartilage of first 6 ribs• Insertion: Fibers insert by short tendon into

greater tubercle of humerus• Action: Prime mover of arm flexion; adducts,

medially rotates arm

PECTORALIS MAJOR

BICEPS BRACHII

• Origin: Coracoid Process of scapula• Insertion: Proximal radius• Action: Flexes elbow, supinates forearm, weak

shoulder flexor

BICEPS BRACHII

ROTATOR CUFF

• Origin: Scapula• Insertion: Head of the humerus• Action: Abduction, internal rotation, external

rotation

ROTATOR CUFF

INJURIES OF THE SHOULDER

• Biceps Tondonitis• Shoulder Impingement

BICEPS TENDONITIS

• Overuse of the biceps• Opposite of overuse?

• 2 origins of the bicep• Coracoid process• Glenoid tubercle

• Very common in swimmers, pitchers

SHOULDER IMPINGEMENT

• Commonly, an overuse injury• Muscles inflame in the shoulder and not enough

space is allowed for muscles to swell• Compress the nerve

• Sometimes it is a structural abnormality• Acromion Process hooks downward to close space

SHOULDER IMPINGEMENT

SHOULDER IMPINGEMENT

HOMEWORK

• Read 209-210• Possibly, maybe, a tiny quiz to start the class (Pay

attention to pictures)• Create flash cards for all muscles covered today

in class• Deltoid• Pectoralis Major• Biceps Brachii• Rotator Cuff