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.
ï· He was a prolific painter, and even in his 90th year, he painted 200 paintings. He was still working on the day he died, at 92, of heart failure. Don Quixote is a 1955 sketch by Pablo Picasso of the Spanish literary hero and his. sidekick, Sancho Panza. About Don Quixote (Man from La Mancha, by Miguel de Cervantes): Don Quixote is a middle-aged gentleman from the region of La Mancha in central.