Muscles of the upper extremity

Which of the following produce supination?

• brachialis

• biceps brachii

• brachioradialis

• triceps brachii

Which of the following insert into the ulna

• brachialis

• biceps brachii

• brachioradialis

• all of these

Which muscles produce elbow flexion?

• brachialis

• biceps brachii

• brachioradialis

• all of these

What is the insertion of both pronator teres and supinator?

• humerus

• radius

• ulna

• scapula

Which of the following produce elbow extension?

• brachialis

• triceps brachii

• supinator

• pronator teres

Which of the following do not attach into the humerus?

• brachialis

• triceps brachii

• biceps brachii

• brachioradialis

Which of the following rotate the palm down?

• biceps brachii

• brachioradialis

• supinator

• pronator teres

How many origins does the triceps brachii have?

• 1

• 2

• 3

• 4