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Upper Limb 3: Arm and Shoulder Joint - UNC MS1 Anatomy
Upper Limb 3: Arm and Shoulder Joint
38
Anatomy
Graduate
10/25/2011

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Term
what attaches to the supraglenoid tubercle?
Definition
the long head of the biceps
Term
what attaches to the infraglenoid tubercle?
Definition
the long head of the triceps
Term
(XXX) ridges of the humerus end at what structures?
Definition
medial and lateral epicondyles
(these are the supracondylar ridges)
Term
condyles of the humerus include?
Definition
epicondyles and articular surfaces
Term
what articular surfaces are at the distal end of the humerus?
Definition
capitulum (for radius) and trochlea (for ulna)
Term
what is just above the articular processes of the distal humerus end?
Definition
coronoid (for coronoid process of the ulna during flexion) and radial fossa (for radial head during flexion)
Term
olecranon fossa
Definition
takes the olecranon process of the ulna during extension; on the posterior, distal end of the humerus
Term
diaphysis
Definition
shaft of a long bone
Term
epiphysis
Definition
ends of long bone
Term
metaphysis
Definition
zone of bone adjacent to the epiphyseal cartilage
Term
median cubital vein
Definition
joins cephalic and basilic vein
goes from lateral to medial (going proximal on the arm)
Term
medial and lateral intermuscular septa
Definition
divide arm into anterior and posterior compartments; arise from brachial fascia
Term
all muscles in the anterior compartment of the arm are innnervated by?
Definition
the musculocutaneous nerve
Term
what covers the bicipital groove?
Definition
the transverse humeral ligament
Term
where do the short head and long head of the biceps originate?
Definition
coracoid process of scapula and supraglenoid tubercle of scapula
Term
bicipital aponeurosis
Definition
connects biceps muscle to the antebrachial fascia
Term
biceps muscle
Definition
flexes shoulder AND elbow (forearm) joint and supinates the forearm
innervated by musculocutaneous
Term
ruptured biceps, where and what?
Definition
typically the long head of biceps tendon tearing from the supraglenoid tubercle
Term
what 3 muscles attach to the coracoid process?
Definition
coracobrachialis, short biceps head, and pectoralis minor
Term
coracobrachialis
Definition
flexor and adductor of arm
musculocutaneous nerve
Term
brachialis
Definition
flexes forearm
musculocutaneous nerve
Term
what does the musculocutaneous nerve become after the elbow?
Definition
the lateral cutaneous nerve of forearm
Term
what does the brachial artery divide into?
Definition
the radial and ulnar arteries
Term
deep (profunda) brachial artery
Definition
accompanies the radial nerve
Term
superior ulnar collateral artery
Definition
accompanies the ulnar nerve posterior to the medial epicondyle of humerus
Term
what innervates the posterior compartment of the arm?
Definition
radial nerve
Term
all triceps heads insert into what?
Definition
olecranon process of ulna
Term
triceps brachii
Definition
forearm extensor
innervated by radial nerve
Term
what vessels/artery run alongside the radial nerve in the arm?
Definition
the deep brachial vessels/artery
Term
patients with mid shaft humeral fractures usually present with?
Definition
wrist drop due to radial nerve damage (innervates extensors of forearm/hand)
Term
surgical neck fractures of the humerus cause damage to what nerve and what subsequent muscle damage?
Definition
axillary nerve and subsequent deltoid atrophy
Term
in the upper limb, superficial lymphatic vessels converge with XXX while deep lymphatic vessels join XXX?
Definition
cephalic/basilic veins and deep veins
Term
how does lymph from upper limbs (right and left) get into the venous system?
Definition
through the right lymphatic duct and the thoracic duct, respectively --> to the subclavian vein from there
Term
glenoid labrum
Definition
fibrocartilagenous ring that surrounds and deepens glenoid cavity
Term
coracoacromial arch
Definition
extrinsic protective ligament that prevents superior dislocation of humeral head
Term
what are the internal ligaments that stabilize the glenohumeral joint?
Definition
superior, middle, and inferior glenohumeral ligaments
Term
what is the most frequently dislocated joint in the body?
where in the joint do the dislocations typically occur?
what tendon typically tears?
Definition
the glenohumeral joint
the anterior-inferior position
the subscapularis tendon
Term
what two muscles supinate the forearm?
Definition
biceps and supinator
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