Meaning: An unpleasant or disastrous destiny. Classified under: Nouns denoting natural events. Synonyms: doom; day of reckoning; doomsday; end of the world. Context examples: everyone was aware of the approaching doom but was helpless to avoid it / that's unfortunate but it isn't the end of the world. Hypernyms (doom is a kind of...):
P874 The respiratory system contributes to homeostasis by providing for the exchange of gases - oxygen and carbon dioxide - between the atmospheric air, blood, and tissue cells. It also helps adjust the pH of body fluids. The cardiovascular and respiratory systems cooperate to supply oxygen and eliminate carbon dioxide. The respiratory system provides for gas exchange - intake of oxygen and elimination of carbon dioxide -and the cardiovascular system transport blood containing the gases between the lungs and body cells.
Well, these are two completely different systems. The Respiratory system is the system of your body that deals with the exchanges of gases in your body, such as oxygen and car â¦ bon dioxide (waste from your cells). The Circulatory system deals with circulating blood throughout your body. However, even though these are two different systems, they are vital to each other. Your heart (Circulatory) and your lungs (Respiratory) are vital to each other. The blood in your body needs oxygen to produce energy in your body. The only way to obtain such is through the Respiratory system. Also, it's the same with getting rid of waste in your cells (Carbon Dioxide) by breathing out.