RESPIRATORY SYSTEM´S ACTIVITIES

THE RESPIRATORY SYSTEM Use the words in the box to fill in the blanks.
air lungs carbon dioxide hiccup mouth	oxygen trachea difussion yawn diaphragm sneeze	inhale respiratory bronchi water vapor blood	exhale cough pharynx nose alveoli
All animals need ________________ to make energy from food. We get this oxygen from the _____________ that we breathe. In order to get the oxygen into the blood where it can be transported to the rest of the body, the air travels through a system of organs called the _______________ system. When you ________________, air enters the body through the _______________ or the ____________. From there it passes through the ______________, which forces air into the _______________ and food into the esophagus. The air travels down the trachea into two branching tubes called ________________ and then on into the ________________. In the lungs oxygen from the air enters the _______________ and by _________ oxygen moves to the __________. At the same time, the waste gas ____________________ leaves the blood and then leaves the body when you ___________________. Some __________________, and other gases, also leaves the body when you exhale, which is why mirrors get foggy when you breathe on them. The ______________ is the muscle that controls the lungs. It is important to keep the respiratory system clear so oxygen can keep flowing into your body. If something gets in your nose and irritates it, you ___________________. If something gets in your trachea or bronchi and irritates it, you _________________. If something irritates your diaphragm, you _________________. Finally, if the brain thinks you are not getting enough oxygen, then it forces you to _________________.