The respiratory system _____1._______ oxygen to the blood and gets rid of carbon dioxide as waste material from the body. Nose or nasal cavity that moistens, ____2.____ the air and filter the ___3._____ particles using the tiny hairs called ___4.___. Pharynx is the passageway of ____5.___ and air. The Larynx is called ___6___ box and the trachea is also called wind __7.___. Bronchi are the two tubes that ____8____ to the bronchioles of the left and right lungs from the trachea and bronchioles are tiny tube it is the passageway of air from bronchi to the alveoli or ___9_______ that are found in the lungs where the exchange of oxygen and ___10.______ occur. Inhalation is the first stage in the process of breathing, intake of the ____11._____ into the lungs through the expansion of chest and the second stage is ______12.________ where the air is taken out from lungs through the _______13.__________ of chest. ________14____________ is a dome-shaped muscle that ____15_____the chest and abdominal cavity and helps in the breathing process: inhalation and exhalation.