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30 Cards in this Set
- Front
- Back
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What are the bones of the arm?
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Trick question:
The arm has only one bone: the humerus. The radius and ulna form the forearm. |
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What are the three long bones of the upper extremity?
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Humerus
Radius Ulna |
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With which bones does the humerus articulate?
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Proximally: scapula
Distally: both the radius and the ulna |
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The rounded portion of the proximal humerus that fits into the glenoid fossa is called the...
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Head
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What and where is the anatomical neck of the humerus?
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Oblique groove just distal to the head but proximal to the greater and lesser tubercles.
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The two projections near the proximal end of the humerus are the...
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Greater and lesser tubercle
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Where is the greater tubercle located and which direction does it project in anatomic position?
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Lies just distal to the anatomical neck, projects laterally
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Where is the lesser tubercle located and which position does it project in anatomic position?
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Lies just distal to the anatomical neck, like the greater tubercle, but projects anteriorly
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The groove between the two tubercles is known as the...
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Intertubercular sulcus
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What and where is the surgical neck of the humerus?
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Narrowing of the humerus just distal to the tubercles
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Why is the surgical neck of the humerus called the surgical neck?
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Fractures often occur here
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The roughened, V-shaped area in the middle portion of the humeral shaft is called the...
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Deltoid tuberosity
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The portion of the humerus that articulates with the radius is the...
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Capitulum
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The portion of the humerus that articulates with the ulna is the...
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Trochlea
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The prominent lateral projections at the distal end of the humerus are the...
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Lateral and medial epicondyles
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What is attached to the medial and lateral epicondyles of the humerus?
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Tendons of most muscles of the forearms
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The bony lateral projections palpated at the elbow are the...
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Lateral and medial epicondyles of the humerus
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Which nerve runs over the medial epicondyle?
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Ulnar nerve
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What are the two bones of the forearm?
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Radius and ulna
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The lateral bone of the forearm is the...
The medial bone of the forearm is the... |
Lateral: radius
Medial: ulna |
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What structure forms the prominence of the elbow?
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Olecranon
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Which bone is the olecranon part of?
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Ulna
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Which bone does the ulna articulate with at its proximal end?
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Both the humerus and the radius.
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With which region of the humerus does the ulna articulate?
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Trochlea
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With which region of the radius does the proximal ulna articulate?
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Head of the radius
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The little bump at the distal end of the posterior ulna is called the...
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Styloid process of the ulna
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What is the longest bone of the forearm?
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The ulna
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Which end of the radius is known as the head?
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Proximal end
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With which region of the humerus does the head of the radius articulate?
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Capitulum ("head to head")
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The bump on the lateral portion of the distal radius is called the...
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Styloid process of the radius
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