Gas Exchange in Humans Quiz-easy

What makes the alveoli suitable as a gas exchange surface in mammals?

• A

• B

• C

• D

Which of the following sequences show the correct path of oxygen as it enters the lungs?

• trachea → bronchiole → bronchus → alveolus

• trachea → bronchus → bronchiole → alveolus

• alveolus → bronchus → bronchiole → trachea

• alveolus → bronchiole → bronchus → trachea

What is the approximate percentage of carbon dioxide in expired air?

• 16 %

• 0.04 %

• 4 %

• 21 %

What is the function of the part labelled K?

• Increasing surface area

• Gas exchange

• Moving mucus

• Trapping bacteria

Name the structures shown in the diagram W to Z.

• larynx, trachea, bronchi, bronchioles

• trachea, larynx, bronchioles, bronchi

• bronchi, trachea, bronchioles, larynx

• larynx, bronchi, larynx, bronchioles