State whether the given statements are true o | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $1$. Breathing (ventilation) involves inhalation,which is an active process requiring the contraction of the diaphragm and external intercostal mu

Vedclass · Accepted Answer

$I -$ True,$II -$ True

Vedclass · Answer

(B) $1$. Breathing (ventilation) involves inhalation,which is an active process requiring the contraction of the diaphragm and external intercostal muscles. Although exhalation is generally a passive process under normal conditions,the overall process of ventilation is considered active because it requires energy expenditure for the inhalation phase.$2$. The contraction of the diaphragm muscle pulls the diaphragm downwards,which increases the anteroposterior volume of the thoracic cavity. This increase in volume leads to a decrease in intrapulmonary pressure compared to atmospheric pressure,thereby generating the pressure gradient necessary for air to flow into the lungs.

State whether the given statements are true or false.
$I.$ Ventilation in humans is an active process.
$II.$ Diaphragm helps in generating the pressure gradient in the lungs.
Choose the correct option.

Similar Questions

Due to the presence of which structure is the pulmonary ventilation system in humans better developed than in reptiles and birds?

When does blood pressure increase during the respiratory cycle?

What structures are responsible for the breathing process?

Expiration occurs due to

An $A$ in the pulmonary volume $B$ the intra-pulmonary pressure to less than the atmospheric pressure which forces the air from $C$ to move into the lungs,i.e.,$D$. Choose the correct options for the blanks $A, B, C$ and $D$ to complete the above statement with reference to $NCERT$ textbook.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

State whether the given statements are true or false.$I.$ Ventilation in humans is an active process.$II.$ Diaphragm helps in generating the pressure gradient in the lungs.Choose the correct option.