Show:
Joints
Bones & Ligaments
Muscle Attachments
Muscle Function
Wild Card
100
The humeroulnar joint is what type of synovial joint?
hinge
100
What specific bone structures articulate to form the proximal radioulnar joint?
head of the radius and radial notch of the ulna
100
Where does the biceps brachii insert?
Radial tuberosity
100
What muscle ONLY flexes the forearm at the elbow?
Brachialis
100
True or False: motion occurs in the elbow complex around the anterioposterior axis
False
200
Supination occurs around what joint axis?
Longitudinal (superioinferior)
200
What ligament stabilizes the radioulnar joint?
Annular ligament
200
What muscle originates on the infraglenoid tubercle and inserts on the olecranon?
Triceps brachii long head
200
All 3 heads of the tricep brachii function to...
Extend the forearm at the elbow
200
What is the origin of the biceps brachii long head?
Supraglenoid tubercle of the scapula
300
What elbow complex articulation is a pivot joint?
radioulnar joint
300
What specific bone structures articulate to form the humeroulnar joint?
trochlea of the humerus and trochlear notch of the ulna
300
What is the insertion of the brachioradialis?
radial styloid process
300
Name 2 muscles supinate the forearm?
biceps brachii, supinator, brachioradialis
300
What type of muscle has a function at more than one joint?
Multi-joint muscle; two-joint muscle
400
The humeroradial joint has how many axes of motion?
2; biaxial
400
What elbow ligament is most likely to be injured by repetitive overhead throwing?
UCL (ulnar collateral ligament) or MCL
400
What muscle originates on the medial epicondyle of the humerus and inserts on the mid radius?
Pronator teres
400
Identify the 3 functions of the brachioradialis muscle
Flexion of the forearm; supinate & pronate forearm back to neutral
400
True or False: The radiolulnar axis of motion lies vertically along the long axis of the radius
False
500
What specific bone structures articulate to form the humeroradial joint?
Capitulum of the humerus; radial head
500
What elbow ligament prevents adduction of the foearm?
LCL or RCL (radial collateral ligament)
500
What is the origin of the supinator?
lateral epicondyle ( and proximal ulna)
500
What are the 3 functions of the biceps brachii?
Flexion of forearm, supinate forearm, flexion of arm at GH joint
500
What is the angle created by the long axis of the humerus and the long axis of the ulna?
Carrying angle