This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
The narrowest pa of the larynx is 
Select and explain. 
A. Ventricle, B. Vestibule, C. Subglottic space, D. Glottis
D: Glottis
Answer: D: Glottis 
Explanation: The rima has an anterior intermembranous pa (three-fifth) and a posterior intercailaginous pa, The rima is the narrowest pa of the larynx. It is longer (23 mm) in males than in females (17 mm ). ref : B D Chaurasia's Human Anatomy , sixth edition, volume 3 , pg. no. 256 ref : 16.15a , B D Chaurasia's Human Anatomy , sixth edition, volume 3 , pg. no. 255