RESPIRATORY
CHRONIC OBSTRUCTIVE PULMONARY DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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alveoli
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trachea
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longhilus
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pleuraholte
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Detailed explanation-1: -The smallest branches of the bronchial tubes are called BRONCHIOLES, at the end of which are the air sacs or alveoli. ALVEOLI are the very small air sacs where the exchange of oxygen and carbon dioxide takes place.
Detailed explanation-2: -This exchange of oxygen and carbon dioxide is called respiration.
Detailed explanation-3: -In mammals, air is warmed and humidified in the nasal cavity. Air then travels down the pharynx, through the trachea, and into the lungs. In the lungs, air passes through the branching bronchi, reaching the respiratory bronchioles, which house the first site of gas exchange.
Detailed explanation-4: -Exchange of gases in lungs occurs through simple diffusion. In this gaseous exchange, oxygen passes from the alveoli into the pulmonary capillary blood and carbon dioxide comes to alveoli from the pulmonary capillary.