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chapter 11
elbow joint
36
Anatomy
Undergraduate 1
02/22/2015

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Term
3 bones that make up the elbow joint
Definition
humerus radius and ulna
Term
2 joints that make up the elbow joint
Definition
humeroulnar and humeroradial
Term
the elbow joint is what type of joint
Definition
hinge joint
Term
elbow has how many axis
Definition
1
Term
degree of flexion of elbow
Definition
145 degrees
Term
degree of extension of elbow
Definition
0 degrees
Term
when in astronomical position, the elbow forms the valgus angle called
Definition
carrying angle
Term
the ligament that attaches on the ulna and completely wraps itself around the radius
Definition
the annular ligament
Term
interosseous membrane found between
Definition
ulna and radius
Term
the functions of interosseous membrane is
Definition
strength to ulna and radius
keeps ulna and radius from separating
adds more surface area
Term
joint that involves the radial head which pivots within the radial notch of the ulna
Definition
proximal radioulnar joint
Term
joint that involves the ulnar notch of the radius and the ulna head
Definition
distal radioulnar joint
Term
triangular fibrocartilage thats located at the end of the ulna
Definition
articular disc
Term
functions of articular disc
Definition
shock absorber
Term
the degree of supination of forearm
Definition
90 degree
Term
the degree of pronation of forearm
Definition
80 degrees
Term
the origin of brachialis
Definition
distal half of anterior surface of humerus
Term
the insertion of brachialis
Definition
superior anterior aspect of the ulna
Term
the action of brachialis
Definition
elbow flexion
Term
the nerve of brachialis
Definition
muculocutaneous nerve
Term
the origin of biceps brachii
Definition
long head - supraglenoid tubercle of scapula
short head - coracoid process of scapula
Term
the insertion of biceps brachii
Definition
superior aspect of the radius and ulna
Term
the action of biceps brachii
Definition
elbow flexion
forearm supination
shoulder flexion
Term
the nerve of biceps brachii
Definition
musculocutaneous nerve
Term
the origin of brachioradialis
Definition
lateral supracondylar ridge of humerus
Term
the insertion of brachioradialis
Definition
styloid process of radius
Term
the action of brachioradialis
Definition
elbow flexion
Term
the nerve of brachioradialis
Definition
radial nerve
Term
the origin of triceps brachii
Definition
infraglenoid tubercle of scapula and posterior surface of humerus
Term
the insertion of triceps brachii
Definition
olecranon process of ulna
Term
the action of triceps brachii
Definition
elbow extension
shoulder extension
shoulder adduction
Term
the nerve of triceps brachii
Definition
radial nerve
Term
the origin of Anconeus
Definition
lateral epicondyle of humerus
Term
the insertion of anconeus
Definition
distal to olecranon
Term
action of anconeus
Definition
elbow extension
pulls annular ligament keeping the ligament from being pinched in the olecranon fossa
Term
the nerve of Anconeus
Definition
radial nerve
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