Science Exam

• Respiration is when you inhale oxygen and exhale carbon dioxide.
• the structure of the respiratory system is nose,pharynx,trachea,bronchi,bronchioles and alveoli.
• Gas exchange is oxygen travels to cells while carbon dioxide travels to the alveoli and gets exhaled.
• when your muscles contract and relax it is called breathing mechanism
• cellular respiration is when oxygen and glucose react to cells and create carbon dioxide,water and energy.
• Beat - The underlying pulse on music