Interconnectedness
19 March 2020
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Digestive Function: The purpose of your digestive system is to take in food from your environment and break it down on both macroscopic and molecular levels. Through the process of digestion, you break large nutrient molecules into smaller ones that your intestine absorbs into the bloodstream. Cells then take up these nutrient molecules and use them to build new molecules and provide for their cellular energy needs. Cells can also store the molecules for later use.
What is the main function of the digestive system? *
Respiratory Function: Your respiratory system takes in oxygen from the atmosphere and moves that oxygen into the bloodstream by allowing it to move across the membranes of the lungs into the blood vessels. The circulatory system then carries oxygen to all the cells in the body and picks up carbon dioxide waste, which it returns to the lungs. Carbon dioxide diffuses from the blood into the lungs, and you exhale it into the atmosphere.
What is the main function of the respiratory system? *
Digestive Dependence Upon Respiration:  The digestive system breaks down food into simpler substances that the body can use including proteins. This helps the respiratory system because the lungs need nutrients. The respiratory system helps the digestive system by giving oxygen to the digestive system. The digestive tract is dependent upon the respiratory system because your digestive tract functions by using muscular contractions to break up food and move it along the tract. Smooth muscle in the stomach churns food into a liquid, and contractions of the intestine move food through the system. These muscles depend upon oxygen in order to function without oxygen, your digestive tract would stop working.
How does the respiratory system help the digestive system? *
Respiratory Dependence Upon Digestion: Similarly, your respiratory tract wouldn't be able to function without the products of digestion. While the process of exhalation is passive and doesn't require muscular contraction, you contract the respiratory muscles including the diaphragm and intercostal muscles to inhale. Muscles need fuel in order to contract, and the fuel they use is primarily in the form of carbohydrate and fat. The efforts of the digestive tract provide the cells of the respiratory muscles with fuel.
What does the digestive tract provide the cells of the respiratory muscles? *
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