This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Aery of anatomical snuffbox? 
Select and explain. 
A. Radial, B. Ulnar, C. Brachial, D. None
A: Radial
Answer: A: Radial 
Explanation: Ans. is 'a' i.e., RadialAnatomical Snuffbox Triangular depression on the dorsal and radial aspect of the hand become visible when thumb is fully extended. BoundariesMedial/Posterior--Tendon of the extensor pollicis longus.Lateral/Anterior--Tendon of the extensor pollicis brevis and abductor pollicis longus.Roof--Skin and fascia with beginning of cephalic vein and crossed by superficial branch of the radial nerve. Floor--Styloid process of radius, trapezium, scaphoid and base of 1st metacarpal.Contents--The radial aery.