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AMT Kin 1 Test 3

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What is the most commonly injured rotator cuff muscle?
Supraspinatus
What muscles attach to the greater and lesser tubercles?
Greater tubercle - supraspinatus,infraspinatus, teres minor

Lesser tubercle - subscapularis
Where are the tubercles located?
The greater tubercle is most lateral and the lesser tubercle is medial.
What nerves form the brachial plexus?
C5-C8 & T1 ventral rami
What muscles attach to the bicipital groove?
Latissimus dorsi, teres major, pectoralis major
What muscles attach to the coracoid process?
Coracobrachialis, the short head of biceps, pectoralis minor
What are the joints of the shoulder complex?
Sternoclavicular, acromioclavicular, scapulothoracic, glenohumeral
What is coracobrachialis named for?
Its origin and insertion
What muscle starts abduction?
Supraspinatus
What muscle provides anterior stabilization to the shoulder joint?
Biceps
What are the actions for arm wrestling?
Winner: medially rotates
Loser: laterally rotates
What are the actions for tennis?
Forehand stroke: medially rotating
Backhand stroke: laterally rotating
What are the actions of rowing?
Reaching oars: flexion
Pulling oars: extension
What are the actions of jumping jacks?
Abduction on apart phase
Adduction on together phase
What are the actions of baseball pitch?
Windup: lateral rotation
Release: medial rotation
What are the actions of bowling?
Draw back: extension
Release: flexion
What is the action of basketball?
Shooting basket: flexion
What is the origin of supraspinatus?
Supraspinous fossa
What is the insertion of suprapinatus?
Greater tubercle
What is the origin of infraspinatus?
Infraspinous fossa
What is the insertion of infraspinatus?
Greater tubercle
What is the origin of teres minor?
Upper 2/3 of axillary border
What is the insertion of teres minor?
Greater tubercle
What is the origin of subscapularis?
Subscapular fossa
What is the insertion of subscapularis?
Lesser tubercle
What is the origin of latissimus dorsi?
Thoracolumbar aponeurosis, lower 6 spinous processes, sacrum & illiac crest
What is the insertion of latissimus dorsi?
Bicipital groove
What is referred to as the swimmer's muscle?
Latissimus dorsi
What is the origin of teres major?
Inferior angle, lower 1/3 axillary border
What is the insertion of teres major?
Bicipital groove
What is referred to as "little swim"?
Teres major
What is the origin of pectoralis major?
Clavicle head: medial 1/2 of clavicle
Sternal head: sternum
What is the insertion of pectoralis major?
Bicipital groove
What is the origin of the deltoids?
Anterior: lateral 1/3 clavicle
Middle: lateral acromion
Posterior: spine of scapula
What is the insertion of the deltoids?
Deltoid tuberosity
What is the origin of coracobrachialis?
Coracoid process
What is the insertion of coracobrachialis?
Medial middle 1/3 of the humerus
What is the origin of biceps?
Short head: coracoid process
Long head: supraglenoid tubercle
What is the insertion of biceps?
Radial tuberosity
What is the origin of triceps?
Long head: infraglenoid tubercle
Lateral head: above spiral groove
Medial head: below spiral groove
What is the insertion of triceps?
Olecranon process of the ulna
Action of supraspinatus?
Abduction
Action of infraspinatous?
Extension, lateral rotation
Action of teres minor?
Extension, lateral rotation
Action of subscapularis?
Adduction, medial rotation
Action of anterior deltoid?
Flexion, abduction, adduction, medial rotation, horizontal adduction
Action of middle deltoid?
Abduction
Action of posterior deltoid?
Extension, abduction, lateral rotation, horizontal abduction
Action of latissimus dorsi?
Extension, adduction, medial rotation
Action of teres major?
Extension, adduction, medial rotation
Action of pectoralis major?
Flexion, extension, adduction, medial rotation, horizontal adduction
Action of coracobrachialis?
Flexion, adduction
Action of biceps?
Flexion
Action of triceps?
Extension
Which muscles are the twins?
Infraspinatus & teres minor
What do the anterior muscles have in common?
Flexion, medial rotation & horizontal adduction
Which muscle assists abduction?
Middle deltoid
Which muscle is the multitasker?
Pectoralis major
Which nerve innervates supraspinatus?
Suprascapular nerve
Which nerve innervates infraspinatus?
Suprascapular nerve
Which nerve innervates subscapularis?
Subscapular nerve
Which nerve innervates teres major?
Subscapular nerve
Which nerve innervates teres minor?
Axillary nerve
Which nerve innervates the deltoids?
Axillary nerve
Which nerve innervates coracobrachialis?
Musculocutaneous nerve
Which nerve innervates biceps?
Musculocutaneous nerve
Which nerve innervates latissimus dorsi?
Thoracodorsal nerve
Which nerve innervates pectoralis major?
Pectoral nerve
Which nerve innervates triceps?
Radial nerve
What is the anterior wall(border) of the axilla?
Pectoralis major
What is the posterior wall(border) of the axilla?
Latissimus dorsi & teres major
What is another name for the subacromial bursa?
Subdeltoid bursa

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