Q. During swallowing, glottis can be covered by a thin elastic cartilaginous flap called …A… to prevent the entry of food into larynx. Trachea is a straight tube extending up to …B… cavity, which divides at the level of 5th thoracic vertebra into right and left primary …C… Choose the correct option for A, B and C from the given four options to complete the above statement with reference to NCERT textbook

Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.