The thoracic cavity increases in volume prima | vedclass

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(B) The process of breathing involves the movement of air into and out of the lungs,which is driven by pressure gradients created by the thoracic cavi

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Diaphragm

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(B) The process of breathing involves the movement of air into and out of the lungs,which is driven by pressure gradients created by the thoracic cavity. $1$. The thoracic cavity is an airtight chamber. $2$. The diaphragm is a dome-shaped muscular partition that separates the thorax from the abdomen. $3$. During inspiration,the contraction of the diaphragm muscle flattens it,which increases the volume of the thoracic cavity in the antero-posterior axis. $4$. This increase in volume leads to a decrease in pressure within the lungs,causing air to flow in. $5$. While external intercostal muscles also assist by lifting the ribs and sternum,the primary increase in thoracic volume is attributed to the contraction of the diaphragm.

The thoracic cavity increases in volume primarily due to the contraction of which of the following?

Similar Questions

What happens during expiration?

What is the difference between pulmonary respiration in frogs and human respiration?

Choose the correct option:
$(1)$ The volume of gases involved in breathing movements is measured by $Sphygmomanometer / Spirometer$.
$(2)$ Inspiration is initiated by the $relaxation / contraction$ of the diaphragm.

What happens when the pressure within the pulmonary cavity is higher than the atmospheric pressure?

In mammals,the ventilation movements of the lungs are governed by:

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