Advanced Humerus Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. A fracture of the surgical neck of the humerus most directly threatens which nerve and artery?
- Ulnar nerve and superior ulnar collateral artery
- Axillary nerve and posterior circumflex humeral artery
- Musculocutaneous nerve and brachial artery
- Median nerve and radial artery
Q2. A fracture of the humeral shaft at the radial groove most directly places which neurovascular structures at risk?
- Ulnar nerve and brachial artery
- Axillary nerve and radial artery
- Median nerve and posterior circumflex humeral artery
- Radial nerve and deep brachial artery
Q3. A displaced supracondylar fracture of the humerus can particularly endanger which major artery?
- Subclavian artery
- Posterior interosseous artery
- Brachial artery
- Axillary artery
Q4. Which humeral fracture site is particularly associated with injury to the ulnar nerve because of its superficial posterior relationship?
- Capitulum
- Deltoid tuberosity
- Greater tubercle
- Medial epicondyle
Q5. Which structure marks the junction between the humeral head and the greater and lesser tubercles?
- Surgical neck
- Deltoid tuberosity
- Anatomical neck
- Intertubercular sulcus
Q6. Which muscle inserts on the lateral lip of the intertubercular sulcus of the humerus?
- Subscapularis
- Pectoralis major
- Latissimus dorsi
- Teres major
Q7. Which muscle inserts on the floor of the intertubercular sulcus?
- Deltoid
- Pectoralis major
- Latissimus dorsi
- Teres major
Q8. Which muscle inserts on the medial lip of the intertubercular sulcus?
- Pectoralis major
- Supraspinatus
- Teres major
- Latissimus dorsi
Q9. When orienting an isolated humerus, which combination correctly identifies its anatomical position?
- Head directed anteriorly with the olecranon fossa medially
- Head directed inferiorly with the olecranon fossa laterally
- Head directed laterally with the olecranon fossa anteriorly
- Head directed medially with the olecranon fossa posteriorly
Q10. Which description best summarizes the anatomical importance of the humerus?
- It forms the lateral forearm and articulates directly with the carpal bones
- It is a wrist bone whose primary function is to form the carpal tunnel
- It forms the medial forearm and rotates around the radius
- It forms the arm, participates in the shoulder and elbow joints, and provides important muscular and neurovascular relationships