Questions and Answers
What is the term for the rounded top part of the humerus?
Which part of the humerus is located just below the head?
What is the name of the prominent bony projection on the outer side of the humerus?
Which landmark is found on the anterior surface of the humerus?
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Which structure represents the groove between the greater and lesser tubercles?
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What is the main shaft area of the humerus called?
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What is the name of the ridge found laterally near the bottom of the humerus?
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Which part of the humerus is the prominent bony projection on the outer side of the elbow?
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What is the bony prominence on the inner side of the elbow called?
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Which ridge is located medially near the distal end of the humerus?
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What is the name of the depression on the front side of the humerus for receiving the head of the radius?
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What is the term for the knob-like structure on the lateral aspect of the distal humerus?
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What is the name of the depression that receives the ulna at the elbow?
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What is the term for the spooled end of the humerus that articulates with the ulna?
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What is the name of the depression located above the trochlea?
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Study Notes
Bony Landmarks of the Humerus
- Head of Humerus: Rounded, proximal end that articulates with the glenoid cavity of the scapula, forming the shoulder joint.
- Neck of Humerus: Narrow region just below the head, dividing the head from the shaft; includes a surgical neck that is a common fracture site.
- Greater Tubercle of Humerus: Prominent projection located laterally; serves as an attachment site for the rotator cuff muscles, specifically the supraspinatus, infraspinatus, and teres minor.
- Lesser Tubercle of Humerus: Smaller, medial projection; provides attachment for the subscapularis muscle.
- Intertubercular Groove: Depression between the greater and lesser tubercles; acts as a pathway for the tendon of the long head of the biceps brachii.
- Deltoid Tuberosity: Roughened area on the lateral side of the humeral shaft; serves as the attachment for the deltoid muscle.
- Shaft of Humerus: Long, cylindrical section that provides structural support; features various landmarks for muscle attachment and articulation.
- Lateral Supracondylar Ridge: Prominent ridge running downward from the lateral side of the shaft towards the elbow; provides attachment for forearm muscles.
- Lateral Epicondyle: Bony prominence on the lateral aspect of the distal humerus; serves as an attachment point for wrist extensors.
- Medial Epicondyle: Medial bony projection at the elbow; serves as an attachment point for wrist flexors.
- Medial Supracondylar Ridge: Prominent ridge on the medial side of the shaft; provides additional points for muscle attachments.
- Radial Fossa: Shallow depression located above the capitulum; accommodates the head of the radius during flexion of the elbow.
- Capitulum: Rounded surface on the lateral aspect of the distal humerus; articulates with the head of the radius.
- Coronoid Fossa: Depression located above the trochlea; receives the coronoid process of the ulna during elbow flexion.
- Trochlea: Spool-shaped surface on the medial aspect of the distal humerus; articulates with the trochlear notch of the ulna.
- Olecranon Fossa: Deep posterior notch that accommodates the olecranon of the ulna when the elbow is extended.
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Description
Test your knowledge on the bony landmarks of the humerus, including its various parts and their functions. This quiz covers information about the head, neck, tubercles, and other key features of the humerus. Perfect for students studying anatomy or healthcare professionals!
