Besides mammalian diaphragm is present in;
Correct answer: B. Crocodiles
- A. Birds
- B. Crocodiles
- C. Fishes
- D. Toads
Explanation
Mammals are characterized by a well-developed diaphragm that separates the thoracic chamber from the abdominal cavity. The diaphragm plays an important role in breathing in mammals. Crocodiles also have a well-developed diaphragm. The lung cavity of the crocodile is separated from the rest of the body cavity by a muscular diaphragm. Hence, option B is correct.
This question appeared on the ETEA MDCAT 2010 paper, which you can sit online with every answer explained.
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The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
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