Most of the airway resistance is from:
Correct Answer: Trachea
Description: 23 generations of respiratory tree:
Trachea – 0th generation
Further divisions – new generations
First 7 generations
Cartilaginous
Non cartilaginous
Last 16 generations
Non cartilaginous
Compressible
Thin layer of smooth muscles +nt
Some neuro endocrine cells +nt
APUD
KULCHITSKY CELLS
First 16 generations - Conducting zone (dead space)
Last 7 Non cartilaginous – Respiratory zone
Note:
Out of first 16 generations, trachea ( 0th generation ) offers maximum resistance.
Reference: GUYTON AND HALL TEXTBOOK OF MEDICAL PHYSIOLOGY, THIRTEENTH EDITION(INTERNATIONAL EDITION)
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now