Differences between avian and mammalian respiration Respiration in birds is much different than in mammals. z Birds have a larynx, but it is not used to make sounds. Instead, an organ termed the syrinx serves as the voice box.. z Birds have lungs, but they also have air sacs. Birds do not have a diaphragm; instead, air is moved in and out of the respiratory system through pressure changes in the air sacs. Muscles in the chest cause the sternum to be pushed outward. This creates a negative pressure in the air sacs, causing air to enter the respiratory system.
Don Quixote did not have many possibilities to read but he took advantage of everything he could find spending his entire fortune on volumes filled with the adventures of the greatest knights in the world. As a result Don Quixote lived like a child seeing things just the way children do when playing.
Don Quixote was firmly persuaded that this was the Marquis of Mantua, his uncle, so the only answer he made was to go on with his ballad, in which he told the tale of his misfortune, and of the loves of the Emperor's son and his wife all exactly as the ballad sings it.hich Treats of the Strange Things That Happpened To the Stout Knight of La Mancha in the Sierra Morena, and of His Imitation of the Penance of Beltenebros. Don Quixote took leave of the goatherd, and once more mounting Rocinante bade Sancho follow him, which he having no ass, did very discontentedly.