Mechanism of Breathing in Humans

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?

During inspiration through abdominal normal breathing, the muscles involved are?

Find the incorrect statement about the mechanism of ventilation.

Select the correct order of sequence required to initiate inspiration.

(i) The contraction of external intercostalmuscles raises the ribs and sternum.
(ii) Volume of thorax increases in the dorso-ventral axis.
(iii) Intrapulmonary pressure decreases.
(iv) Diaphragm contraction.
(v) Air rushes into lungs.
(vi) Volume of thorax increases in the anterior-posterior axis.

The reason due to which negative pressure is generated within the thoracic cavity is