Chapter 11 - Elbow Joint Flashcards
(39 cards)
Carrying angle
in anatomical position, the longitudinal axes of the humerus and the forearm form an angle
Medial collateral ligament
triangular and spans the medial side of the elbow, attaches on the medial epicondyle of the humerus, and runs obliquely to the medial sides of the coronoid process and olecranon process of the ulna
Lateral collateral ligament
triangular, attaches proximally on the lateral epicondyle of the humerus and distally on the annular ligament and the lateral side of the ulna
Annular ligament
attaches anteriorly and posteriorly to the radial notch of the ulna, encompassing the head of the radius and holding it against the ulna
Brachialis Origin
distal half of humerus, anterior surface
Brachialis Insertion
coronoid process and ulnar tuberosity of the ulna
Brachialis Action
elbow flexion
Biceps (SH) Origin
coracoid process of scapula
Biceps (LH) Origin
supraglenoid tubercle of the scapula
Biceps Insertion
radial tuberosity of radius
Biceps Action
elbow flexion, forearm supination
Brachioradialis Origin
lateral supracondylar ridge on the humerus
Brachioradialis Insertion
styloid process of the radius
Brachioradialis Action
elbow flexion
Triceps (LH) Origin
infraglenoid tubercle of the scapula
Triceps (Lat. H) Origin
inferior to the greater tubercle on the posterior humerus
Triceps (MH) Origin
the posterior surface of the humerus
Triceps Insertion
olecranon process of ulna
Triceps Action
elbow extension
Anconeus Origin
later epicondyle of the humerus
Anconeus Insertion
lateral and inferior to olecranon process of ulna
Anconeus Action
assists in elbow extension, not a prime mover in any joint action
Pronator Teres Origin
medial epicondyle of humerus and coronoid process of ulna
Pronator Teres Insertion
lateral aspect of radius at its midpoint