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
Lateral boundary of cubital fossa is formed by: 
Select and explain. 
A. Brachioradialis, B. Pronator teres, C. Brachialis, D. Biceps
A: Brachioradialis
Answer: A: Brachioradialis 
Explanation: 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.