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Respiration Notes Respiration air The purpose of the respiratory system is to take ________ lungs from around the body and transport it to the ___________. oxygen Once in the lungs, the _____________ is removed from the air and carbon dioxide is added. Breathing in is called inhalation _________________ and breathing out is called exhalation _____________________. Once in the lungs, the journey is not over. The final destination for the oxygen is your muscles body’s ____________. How does breathing change with exercise? Which picture would cause me to breathe the hardest? How does breathing change with exercise? The greater your intensity, the faster your breathing. In other words, the harder you work, the harder you breathe Types of Respiration Because the journey that oxygen takes is so long and complex, it is broken up into three parts that involve the Respiratory System, Circulatory System and the Muscular System. External Internal Cellular External Respiration This is the part of respiration where air moves from outside the body into the alveoli External Respiration This is the part of respiration where air moves from outside the body into the alveoli Simplified – Air enters the body and travels to the lungs Internal Respiration This is part of respiration occurs in the alveoli. Oxygen is removed from the air and enters a blood vessel. Internal Respiration This is part of respiration occurs in the alveoli. Oxygen is removed from the air and enters a blood vessel. Simplified – Oxygen moves from the alveoli into the bloodstream. Cellular Respiration This part of respiration occurs in the muscles. Oxygen moves from the blood vessels into a muscle and provides energy for contraction. Cellular Respiration This part of respiration occurs in the muscles. Oxygen moves from the blood vessels into a muscle and provides energy for contraction. Simplified – Oxygen moves into a muscle for energy. Let’s talk about gas What are the two gases that are important to us in the respiratory system? Oxygen and Carbon Dioxide. O2 and CO2 How are their paths different Oxygen: External – Internal - Cellular Carbon Dioxide Cellular – Internal - External