Intermediate Triceps Brachii Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Where does the lateral head of the triceps brachii originate?
- Medial epicondyle of the humerus
- Posterior humerus inferior to the radial groove
- Infraglenoid tubercle of the scapula
- Posterior humerus superior to the radial groove
Q2. Where does the medial head of the triceps brachii primarily originate?
- Supraglenoid tubercle
- Radial tuberosity
- Posterior humerus inferior to the radial groove
- Posterior humerus superior to the radial groove
Q3. Which two structures travel together in the radial groove between triceps brachii attachments?
- Ulnar nerve and ulnar artery
- Musculocutaneous nerve and radial artery
- Radial nerve and profunda brachii artery
- Median nerve and brachial artery
Q4. Which artery is a major source of blood supply to the triceps brachii?
- Anterior interosseous artery
- Profunda brachii artery
- Thoracoacromial artery
- Radial recurrent artery only
Q5. What additional action can the long head of the triceps brachii perform at the shoulder?
- Flexion and abduction of the arm
- Extension and adduction of the arm
- Abduction and medial rotation of the arm
- Supination and pronation of the arm
Q6. Which head of the triceps brachii lies deepest for much of its course?
- Lateral head
- Long head
- All three are equally superficial
- Medial head
Q7. Which head of the triceps brachii originates from the scapula rather than the humerus?
- Long head
- Both lateral and medial heads
- Lateral head
- Medial head
Q8. Which structure does the long head of the triceps brachii pass between near the posterior shoulder?
- Brachialis and brachioradialis
- Teres minor and teres major
- Supraspinatus and infraspinatus
- Pectoralis major and pectoralis minor
Q9. Which head of triceps brachii is active during elbow extension regardless of the amount of resistance?
- Lateral head only
- Medial head
- None of the heads
- Long head only
Q10. Which muscle assists the triceps brachii in elbow extension?
- Biceps brachii
- Anconeus
- Pronator teres
- Brachialis