The Arm Flashcards
what three synovial joints make up the elbow
- humeroalnar
- humeroraidal
- proximal radioulnar
the medial condyle flexing is the ____ to ____
Lateral condyle to extensors
what are the 4 boney processes on the Ulna
Olecranon
Coronoid
Unar tuberosity
Radial notch
The trochlea is M/F?
Male
The trochlear notch of the ulna is M/F?
Female
what limits flexion at the humeroulnar joint
coronoid process or soft tissue approximation
what limits extension at the humeroulnar joint
limited by the olecranon process
capitulum is M/F?
Male
Radial head is M/F?
Female at humeroradial joint and distal radioulnar
male at proximal radioulnar
O/I/ N of the brachialis
O - distal 1/2 of anterior shaft of humerus
I - ulnar tuberosity + corned process
N - musculocutaneous
Action of the brachialis
- flexion at the elbow (always active) (uninfluenced by position)
O/I/N of the brachioradialis
O- lateral supracondylar ridge
I - lateral aspect of radial styloid
N - Radial N
Action of the Brachioradialis
flexion of the elbow
- most effective in mid range or pron/sup
O/I of pronator Teres
O - medial epicondyle of humerus and medial coronoid process
I - middle 1/3 of lat radius
Nerve innervation of Pronator teres
N - median n
Action of pronator teres
Pronate forearm at RUJ
Assist in flexion
O/I of triceps brachia
LH - infraglenoid tubercle
LatH - proximal 1/3 of post humer
MD - distan 2/3 of post humer
I - olecranon process
Action and innervation of triceps
N - radial
LH - extension at GH
all heads extend forearm
O/I/N of the anconeus
O - lateral epicondyle of humerus
I - lat surface of olecranon process + superior part of ulna
N - radial N
Action of the anconeus
extension of forearm
O/I of pronator quadratus
O - distal 4th of anterior ulna
I - distal 4th of anterior radius
Action and nerve of pronator quadrates
A - probation
N - median
O/I/N of supinator
O - lat epicondyle of humerus
I - proximal 3rd of lateral radius
N - radial N
what muscles do supination
Biceps Brachii, brachioradialis, supinator
