Question

Which of these is the correct order through which oxygen enters the body?

A. lungs, bronchi, bronchioles, alveoli, blood

B. bronchi, lungs, bronchioles, alveoli, blood

C. lungs, bronchi, bronchioles, blood, alveoli

D. blood, alveoli, lungs, bronchi, bronchioles

Answer 1

The correct answer would be option B.

The oxygen or air enters through nose and passes to trachea via larynx.

The trachea divides into left and right bronchi.

Each bronchus enters each lung.

Each bronchus then divides into smaller tubes termed as bronchioles.

Ultimately, it reaches alveoli which form the gaseous exchange site in the lungs.

The oxygen diffuse into blood and carbon dioxide from blood is diffused into exhaled air.

Answer 2

"Bronchi, lungs, bronchioles, alveoli, blood" is the correct order through which oxygen enters the body. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and it has come to your help.