This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Airway, Subject name: Anaesthesia
Why is bevel of Endotracheal tubes left sided at the proximal tip of the tube- 
Select and explain. 
A. For easier passage of tube through vocal cords, B. To prevent occlusion of tip by tracheal wal, C. For high pressure ventilation, D. All of the above
A: For easier passage of tube through vocal cords
Answer: A: For easier passage of tube through vocal cords 
Explanation: Endotracheal tubes (ETTs) typically have a left-facing bevel at the tip. ... The bevel is left-facing rather than right-facing to allow a better view of the ETT tip entering the field of view from right to left/ midline and then passing throught the vocal chords. bevel is towards left side.