Shoulder, Arm, Elbow

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Last updated: May 20, 2026

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First submitted	May 18, 2026
Times taken	3
Average score	9.0%
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Hint	Answer
Anterior Axioappendicular muscles (4)	Pectoralis Major
AAM	Pectoralis Minor
AAM	Subclavius
AAM	Serratus Anterior

Posterior Axioappendicular muscles (5)	Trapezius
PAM	Latissimus dorsi
PAM	Levator scapulae
PAM	Rhomboid Minor
PAM	Rhomboid Major

Scapulohumeral muscles	Rotator Cuff
SM	Teres Major
SM	Deltoid

Muscles of the Rotator Cuff	Supraspinatus
Rotator Cuff	Infraspinatus
Rotator Cuff	Teres Minor
Rotator Cuff	Subscapularis
Common Function of Rotator Cuff	Hold humeral head in glenoid cavity

Anterior Arm Muscles	Biceps Brachii
AArmM	Coracobrachialis
AArmM	Brachialis
Posterior Arm Muscles	Triceps Brachii
PArmM	Aconeus

Nerve injured in Surgical Neck Injury (Regimental badge/deltoid weak)	Axillary
Nerve injured in Mid-shaft Injury (wrist weak)	Radial
Nerve Injured in Distal Humerus Injury	Median
Nerve Injured in Medial Epicondyle Injury	Ulnar

Only articulation of UL to axial skeleton - Synovial Saddle Joint	Sternoclavicular
Synovial Saddle Joint Ligaments	sternoclavicular
Synovial Saddle Joint Ligaments	Interclavicular
Synovial Saddle Joint Ligaments	Costoclavicular

Plane type synovial shoulder joint	Acromioclavicular joint
Plane joint ligaments	Acromioclavicular
Plane joint ligaments	Coracoacromial
Plane joint ligaments (2)	Conoid, Trapezoid, coracoclavicular

Glenohumeral ligaments (3)	Superior, middle, inferior
Glenohumeral ligaments	Coracohumeral
Glenohumeral ligaments	Transverse Humeral

Elbow joints	humeroulnar
Elbow joints	humeroradial

Hint	Answer
Elbow joints (pivot joint --> pro/supination)	proximal radioulnar
Ligaments reinforcing elbow (3 bands)	Ulnar collateral
Ligaments that blend	Radial collateral, anular ligament

Innervation to anterior/flexor compartment	Musculocutaneous nerve
Innervation to Posterior/Extensor compartment	Radial nerve

Main arteries of the arm	Subclavian, Axillary, Brachial
Subclavian origin in left and right arm	aorta, brachiocephalic trunk
Subclavian branches (1(2))	thyrocervical trunk (transverse cervical, suprascapular)
Subclavian branches	Dorsal Scapular
What do the subclavian branches anastomose with and via	3rd part of axillary via subscapular artery

Branches of Axillary 1st - Screw the lawyer save a patient	Superior thoracic
2nd	Thoracoacromial trunk
3rd (3 - anastomose)	Subscapular, anterior and posterior circumflex humeral
Branches of the 2nd axillary branch (CPDALT)	clavicular, pectoral, deltoid, acromial, lateral thoracic

What vein is near brachial artery at pulse point	Median Cubital Vein
What separates these and protects the brachial during blood tests	Bicipital Aponeurosis
What is the brachial artery medial to at the proximal humerus, and lateral to at the distal humerus?	Median nerve

Brachial Plexus parts - read that damn cadaver book	Roots, trunks, Divisions, Cords, Branches
What unites to form the superior trunk	C5, C6
What unites to form the inferior trunk	C8, T1
Divisions	3 anterior, 3 posterior
Cords	lateral, medial, posterior
5 terminal Branches + origin	Musculocutaneous (C5-7)
5 terminal branches	Median, C6-T1
5 terminal branches	Ulnar, C8-T1
5 terminal branches	Axillary. C5-C6
5 terminal branches	Radial, C5-T1

What is innervated by axillary nerve	Deltoid, teres minor, skin of lower deltoid
What is innervated by radial nerve	All Posterior muscles, dorsal 3.5 fingers
Upper brachial plexus injury - forced separation of head from shoulder, affects C5-6, e.g. during birth/fall	Erb's Palsy
Lower brachial plexus injury - forced separation of arm from head, affects C8-T1, claw hand e.g. during birth or grabbing above in a fall	Klumpke's Palsy

Muscles that insert in the scapula that we learnt (4)	Pectoralis minor
scapula	Serratus Anterior
scapula	Levator Scapulae
scapula	Minor + Major Rhomboids

ONLY rotator cuff muscle that origin in scapula but DOESN'T insert on the greater tubercle of humerus	Subscapularis

Muscles inserting on the intertubercular sulcus (3)	Pectoralis Major
intertubercular sulcus	Latissimus Dorsi
intertubercular sulcus	Teres Major