The given figure shows the human respiratory | vedclass

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(D) Based on the provided diagram of the human respiratory system:$A$ represents the Trachea,which is a straight tube extending up to the mid-thoracic

Vedclass · Accepted Answer

$C -$ Alveoli - It is a thin-walled,capillary-rich,bag-like structure that performs gas exchange.

Vedclass · Answer

(D) Based on the provided diagram of the human respiratory system:$A$ represents the Trachea,which is a straight tube extending up to the mid-thoracic cavity,supported by incomplete cartilaginous rings.$B$ represents the Pleural membranes,which enclose the lungs and reduce friction on the lung surface.$C$ represents the Alveoli,which are the primary sites of gas exchange,characterized by thin,irregular-walled,and vascularized bag-like structures.$D$ represents the Diaphragm,which is a dome-shaped muscular partition that separates the thoracic cavity from the abdominal cavity and plays a crucial role in breathing mechanics.Option $D$ correctly identifies $C$ as the alveoli,which are thin-walled,capillary-rich structures essential for the exchange of gases.

The given figure shows the human respiratory system with structures labeled $A, B, C,$ and $D$. Which of the following options correctly identifies the structure and its main function or characteristic?

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