Arm Flashcards
importance of: capitulum
articulates with radius
importance of: trochlea
articulates with the ulna
importance of: lateral epicondyle
attachment of muscles (post com. of forearm)
importance of: medial epicondyle
attachment of muscles (ant com. of forearm)
- ulnar nerve runs posteriorly
importance of: radial fossa
accomodate bones of forearm during movement at the elbow
importance of: radial groove and location
- radial nerve
- profunda brachii artery
- mid humerus
coracobrachialis inserts:
mid humerus
importance of: olecranon fossa
receives olecranon of ulna during extension of forearm
biceps brachii: location
anterior com. of arm
biceps brachii: origin
- long head:
supraglenoid tubercle - short head: coracoid process
biceps brachii: insertion
- radial tuberosity,
- bicipital aponeurosis -> merge into fascia
biceps brachii: innervation
musculocutaneous nerve
biceps brachii: action
flex arm, flex and supinate forearm
brachialis: location
anterior com. arm
brachialis: origin
anterior surface of humerus
brachialis: insertion
ulnar tuberosity
brachialis: innervation
musculocutaneous nerve
coracobrachialis: location
anterior com. of arm
coracobrachialis: origin
coracoid process
coracobrachialis: insertion
medial surface of humerus
coracobrachialis: innervation
musculocutaneous nerve
coracobrachialis: action
flex arm at shoulder (glenohumeral) joint
brachialis: action
flex forearm
eg. Popeye sign
rupture of long head of biceps brachii tendon
triceps brachii: location
posterior com. arm
triceps brachii: origin (long head)
infraglenoid tubercle
triceps brachii: origin (medial head)
post surface of humerus, inferior to radial groove
triceps brachii: origin (lateral head)
post surface of humerus, superior to radial groove
triceps brachii: insertion
olecranon
triceps brachii: innervation
radial nerve
triceps brachii: action
extend forearm, extend, adduct the arm at glenohumeral joint
anconeus: location
post com. arm
anconeus: origin
posterior surface of lateral epicondyle
anconeus: insertion
posterior surface of ulna
anconeus: innervation
radial nerve
anconeus: action
assists in extension of elbow
list 3 spaces:
medial triangular, lateral triangular, quadrangular
what passes through: medial triangular space
circumflex scapular artery
what passes through: lateral triangular space
radial nerve, profunda brachii artery
what passes through: quadrangular
axillary nerve, posterior circumflex humeral artery
