This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'Lateral boundary of cubital fossa is formed by: \nSelect and explain. \nA. Brachioradialis, B. Pronator teres, C. Brachialis, D. Biceps', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Brachioradialis Boundaries of cubital fossa- Laterally - Medial border of brachioradialis. Medially - Lateral border of pronator teres. Base - It is directed upwards, and is represented by an imaginary line joining the front of two epicondyles of the humerus. Apex - It is directed downwards, and is formed by the area where brachioradialis crosses the pronator teres muscle. Ref: Gray&;s anatomy text book of anatomy BD chaurasia 21st Ed.', 'role': 'assistant'}]