Respiratory System and Mechanics of Breathing Quiz

Where is the diaphragm located in the body?

• In the nasal cavity

• At the base of the chest cavity

• Between the ribs

• Above the lungs

What happens to the diaphragm during inspiration?

• It contracts and moves upwards

• It relaxes and moves upwards

• It remains stationary

• It contracts and flattens

During expiration, what is the movement of the rib cage?

• Downwards and inwards

• Remains stationary

• Expands laterally

• Upwards and outwards

How does sustained exercise affect the respiratory muscles?

• Has no effect

• Decreases their strength

• Weakens the diaphragm

• Increases their strength

What is the benefit of stronger respiratory muscles for athletes?

• Allows them to hold their breath longer

• Enables higher intensity and longer duration of performance

• Reduces the need for oxygen

• Increases lung size