Mechanism of Breathing in Humans

Is pulmonary ventilation and breathing the same?

Read the following steps and arrange them in correct sequence for the process of inspiration:

A. Increase thoracic volume

B. Air moves into lungs

C. The contraction in diaphragm and EICM

D. Increase pulmonary volume

E. Lungs expand

F. Decrease the pulmonary pressure (IPP)

Assertion (A) : Expiration is a passive process.

Reason (R) : In this process, muscles of diaphragm and external intercostal muscles relax.

The correct option among the following is

Assertion: Inspiration is an active process.

Reason: It takes place by the contraction of muscles of diaphragm and external intercostal muscles.

The correct option among the following is

Amount of air exchanged in breathing can be measured with a

Mark the true statement among the following with reference to normal breathing

During rest, the metabolic needs of the body are at their minimum. Which of the following is indicative of this situation

Breathing differs from respiration by

Respiration is the physiological process in which

Exhalation is the process of expulsion of air through the respiratory tract. Which figure correctly shows the process of exhalation

Lung ventilation movements are due to

Which one of the following is called inspiratory muscle in mammals?

During inspiration, the diaphragm

During expiration the diaphragm becomes

Which of the following statements is correct?

Which structures are responsible for the breathing process?

During inspiration

The rate of breathing in an adult during resting condition is 

What happens during expiration?

What happens during inspiration?