Pulmonary Ventilation Quiz

What is the effect on chest volume during breathing out?

• Volume increases

• Volume decreases

• Volume remains the same

• Volume doubles

Which of the following describes the pressure change during breathing out?

• Pressure decreases

• Pressure remains constant

• Pressure increases

• Pressure fluctuates

What is the primary action of the diaphragm during breathing out?

• It flattens

• It moves up

• It contracts

• It expands

Which statement is true about the chest volume during breathing in?

• Volume decreases

• Volume remains constant

• Volume increases

• Volume fluctuates

What happens to the pressure in the chest cavity during breathing in?

• Pressure decreases below that of the atmosphere.

• Pressure increases above that of the atmosphere.

• Pressure remains constant.

• Pressure becomes equal to that of the atmosphere.

What is the function of the diaphragm during breathing out?

• It relaxes, moving up to decrease the volume of the chest cavity.

• It contracts, moving down to increase the volume of the chest cavity.

• It remains stationary.

• It contracts, moving up to increase the volume of the chest cavity.

Which of the following describes the movement of the rib cage during breathing out?

• In and down

• Up and out

• In and up

• Down and out

What happens to the diaphragm during inspiration?

• It moves superiorly

• It moves inferiorly

• It remains stationary

• It contracts laterally

What is the sequence of events during inspiration?

• Muscles relax, volume decreases, pressure rises

• Muscles contract, volume increases, pressure drops

• Muscles contract, volume decreases, pressure rises

• Muscles relax, volume increases, pressure drops

What is the effect of diaphragm contraction during inspiration?

• It moves superiorly

• It moves inferiorly

• It remains stationary

• It contracts laterally