Question

Describe the mechanism of pulmonary gaseous exchange

Answer 1

Answer:

Explanation:

Pulmonary gaseous exchange:

              " The respiration that occurs through the

                lungs is called as pulmonary gaseous

                exchange or respiration."

Pulmonary gaseous exchange is common in amphibians e.g., frog salamander etc.

Mechanism of pulmonary gaseous exchange:

In frog,air enters through the nostrils,when the nostrils are open;the mouth is closed.After entry of air the nostrils close.The floor of the buccal cavity is raised.air is pushed into lungs .

This intake of air is known as inhalation or inspiration.

Lungs in frog are simple sacs almost like balloon when they are fully expanded.The inner surface of lung is increased by thin walled air chambers The walls of these air chambers are richly supplied with blood capillaries.

These blood containing areas in the lungs are the main sites for gaseous exchange .

The consumed air after gaseous exchange move out of the lungs through nostrils

The removal of consumed air out of the lungs ,after gaseous exchange has occurred,is called exhalation or expiration.

HOPE YOU CAN UNDERSTAND!

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