GENERAL ANATOMY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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air forced in, diaphragm relaxes, air pressure raises
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diaphragm contracts, air pressure lowers, air forced in
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air pressure raises, air forced out, diaphragm contracts
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diaphragm relaxes, air pressure drops, air forced in
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Detailed explanation-1: -When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.
Detailed explanation-2: -Final answer: The correct sequence of the passage of air during inspiration is Pharynx → Larynx → Trachea → Bronchi → Alveoli.
Detailed explanation-3: -The air we inhale enters our body through our nostrils. It then passes through the nasal cavity, the pharynx, the larynx and finally enters the windpipe, also known as the trachea. The trachea branches into bronchi which sends air into both the lungs.
Detailed explanation-4: -Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
Detailed explanation-5: -Ventilation. Pulmonary gas exchange. Gas transport. Peripheral gas exchange. 20-Jul-2020