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Questions and Answers
What is the shape of the cubital fossa?
What is the shape of the cubital fossa?
Triangular
What are the three borders of the cubital fossa?
What are the three borders of the cubital fossa?
Lateral, medial, and superior
What muscle forms the lateral border of the cubital fossa?
What muscle forms the lateral border of the cubital fossa?
- Pronator teres
- Supinator
- Biceps brachii
- Brachioradialis (correct)
What forms the superior border of the cubital fossa?
What forms the superior border of the cubital fossa?
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What structures make up the roof of the cubital fossa?
What structures make up the roof of the cubital fossa?
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What muscles form the floor of the cubital fossa?
What muscles form the floor of the cubital fossa?
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Study Notes
Cubital Fossa Borders
- The cubital fossa is triangular and has three borders, a roof, and a floor.
- Lateral border: The medial border of the brachioradialis muscle.
- Medial border: The lateral border of the pronator teres muscle.
- Superior border: An imaginary horizontal line drawn between the epicondyles of the humerus.
- Roof: The bicipital aponeurosis, fascia, subcutaneous fat, and skin.
- Floor: The brachialis muscle (proximal) and supinator muscle (distal).
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