Respiratory

** The Respiratory System ** =The Respiratory system allows us to produce energy in the body by inhaling oxygen and eliminating carbon dioxide. The respiratory system supplies oxygen for the heart to use In the right side of the heart, deoxygenated blood is returned from the body and is then pumped to the lungs, where the carbon dioxide is eliminated and oxygen is restored. From the lungs, the blood goes back into the heart through the left side and then it is pumped throughout the body.= **Breathing begins in the nose then goes through the trachea, then through the bronchi, and then passes through the bronchioles in the lungs. The bronchi send the air into the lungs where the alveoli and bronchioles take in the oxygen and allow it to absorb into the blood stream. From the lungs the newly formed oxygenated blood goes back into the left side of the heart, where it is pumped throughout the body.** Homeostasis is maintained by the respiratory system in two ways, one is gas exchange and the other is the regulation of blood pH. Gas exchange occurs in the lungs, where carbon dioxide is eliminated and deoxygenated blood is renewed through the alveoli. This is called cellular respiration. When cellular respiration occurs, the body produces ATP (energy) which we can use for many functions, one being homeostasis. **
 * __ The Process of Breathing: __**
 * __ Homeostasis in the respiratory system: __

**All of the other major systems in the body interact with the respiratory system; the 6 main systems are the** **digestive system****, the** **skeletal system****, the** **cardiovascular system****, the** **nervous system****, the endocrine system, and the** **muscular system****. The respiratory system works with the digestive system in the throat; when you eat, food goes down through your throat and into your stomach. The path that the food goes through is created by the epiglottis. The epiglottis is a tiny flap that opens when you breathe and closes when you eat. The digestive system also provides nutrients for the lungs by digesting food and retrieving the nutrients. Another system the respiratory system works with is the skeletal system. The skeletal system provides the rib cage which surronds the lungs giving them protection from getting hit. The respiratory system also interacts with the cardiovascular system. When you breathe, the heart is pumping blood and using the oxygen in the lungs to re-oxygenate blood in the body. The oxygen goes into the lungs and inside the alveoli, where the oxygen is absorbed into the blood and pumped back into the heart and then to the rest of the body. The respiratory system also cooperates with the endocrine system in several ways. Thyroid hormones such as thyroxine and triiodothyronine work together with the nervous system to control the body's basal metabolic rate, the rate at which it uses energy. Since energy is supplied directly by the oxygen taken in by the respiratory system, an increase or decrease in this rate will affect how hard the respiratory system has to work. In addition, hormones such as adrenaline and noradrenaline can boost oxygen supply to the brain and muscles by increasing the rate of respiration as a part of the fight-or-flight response. Lastly, respiratory system interacts with the muscular system. In order to breathe, your lungs have to contract and relax. These contractions are done through the muscular system; the muscles in the lungs flex and un-flex to take in the oxygen.**
 * __ How the Respiratory System Work With Other Systems: __**