GASEOUS EXCHANGE IN A MAMMAL – HUMAN
GASEOUS EXCHANGE IN A MAMMAL – HUMAN The breathing system of a mammal consists of a pair of lungs which are thin-walled elastic sacs lying in the thoracic cavity. The thoracic cavity consists of vertebrae, sternum, ribs and intercostal muscles. The thoracic cavity is separated from the abdominal cavity by the diaphragm. The lungs […]
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