MOIANL

Question 1

brachialis

Answer 1

• O - distal 1/2 of anterior humerus
• I - ulnar tuberosity and coronoid process of ulna
• A - elbow flexion
• N - musculocutaneous and radial
• L - C5-6

STRONG elbow flexor regardless of forearm pronation

Question 2

biceps brachii

Answer 2

• O - long head: supraglenoid tubercle of scapula; short head: coracoid process of scapula
• I - radial tuberosity of radius
• A - shoulder flexion, elbow flexion, and forearm supination
• N - musculocutaneous
• L - C5-6

Question 3

brachioradialis

Answer 3

• O - lateral supracondylar ridge of humerus
• I - styloid process of radius
• A - elbow flexion
• N - radial
• L - C5-6

Question 4

supinator

Answer 4

• O - lateral epicondyle of humerus and proximal ulna
• I - anterior surface of proximal radius
• A - forearm supination
• N - radial
• L - C5-6

Question 5

triceps brachii

Answer 5

• O - long head: infraglenoid tubercle of scapula, medial head: distal posterior humerus, lateral head: proximal posterolateral humerus
• I - olecranon process of ulna
• A - shoulder extension and elbow extension
• N - radial
• L - C6-8

Question 6

anconeus

Answer 6

• O - lateral epicondyle of humerus
• I - lateral and distal to olecranon process of ulna
• A - elbow extension (assists)
• N - radial
• L - C7-8

Question 7

pronator teres

Answer 7

• O - medial epicondyle of humerus and coronoid process of ulna
• I - lateral radius at midpoint
• A - forearm pronation
• N - median
• L - C6-7

Question 8

pronator quadratus

Answer 8

• O - distal 1/4 of anterior ulna
• I - distal 1/4 of anterior radius
• A - forearm pronation
• N - median
• L - C8-T1