Questions and Answers
What is the head of humerus?
What is the trochlea?
What is the capitulum?
What is the radial fossa?
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What does the lateral epicondyle serve as?
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What is the function of the medial condyle?
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What is the deltoid tuberosity?
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What is the groove for radial nerve?
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What is the olecranon fossa?
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What is the anterior view of the right humerus?
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What structure corresponds to the lesser tubercle?
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Study Notes
Humerus Features
- Head of humerus: The rounded proximal end that fits into the glenoid cavity of the scapula, contributing to the shoulder joint.
- Trochlea: A spool-shaped structure located on the distal end of the humerus that articulates with the ulna.
- Capitulum: A rounded knob on the distal humerus that articulates with the radius, facilitating elbow movement.
- Radial fossa: A depression on the anterior surface of the humerus above the capitulum, accommodating the head of the radius during flexion.
- Lateral epicondyle: A bony prominence on the outer side of the humerus, serving as an attachment site for forearm muscles.
- Lateral condyle: A small rounded area situated laterally at the distal end of the humerus, forming part of the joint surface.
- Lateral supracondylar ridge: A ridge running along the lateral side of the humerus; acts as a muscle attachment point.
- Deltoid tuberosity: A roughened area on the lateral side of the humerus where the deltoid muscle attaches.
- Crest of greater tubercle: A prominent ridge along the lateral aspect of the humerus, aiding in muscle attachment.
- Greater tubercle: A large lateral projection providing attachment for rotator cuff muscles.
- Lesser tubercle: A smaller projection on the anterior aspect of the humerus, serving as an attachment for the subscapularis muscle.
- Intertubercular groove: A groove between the greater and lesser tubercles, allowing passage for the tendon of the long head of the biceps brachii.
- Crest of lesser tubercle: A ridge located on the anterior surface, providing a site for muscle attachment.
- Medial supracondylar ridge: A bony prominence running along the inner side of the humerus, providing muscle attachment.
- Medial condyle: A smooth rounded area on the inner side of the distal humerus, part of the elbow joint.
- Medial epicondyle: A bony bump on the inner side of the elbow, serving as an attachment point for wrist flexor muscles.
- Coronoid fossa: A depression above the trochlea on the anterior surface that receives the coronoid process of the ulna when the elbow flexes.
- Greater tubercle: Repeated mention signifies its importance as a key muscle attachment site.
- Anterior view of right humerus: Displays the features and orientation of the humerus when viewed from the front.
- Posterior view of right humerus: Highlights structures visible from the back, aiding in anatomical understanding.
- Groove for radial nerve: A channel along the posterior side of the humerus that houses the radial nerve, crucial for arm function.
- Lateral supracondylar ridge: Reaffirmed importance as a muscle attachment site.
- Olecranon fossa: A deep cavity on the posterior side of the humerus that accommodates the olecranon of the ulna when the arm is extended.
- Groove for ulnar nerve: A passage that allows the ulnar nerve to run along the inner aspect of the humerus, crucial for hand function.
- Medial epicondyle: Reiteration of its significance as a site where muscles of the forearm attach.
- Medial supracondylar ridge: Reinforces its role in providing muscle attachment.
- Trochlea: Reiterated for its essential role in elbow articulation, particularly with the ulna.
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Test your knowledge of the humerus anatomy with this quiz featuring an unlabelled diagram. Identify the different parts and learn their functions through defined terms. Perfect for students studying human anatomy or preparing for exams.
