Respiratory System: Questions and Answers

Topics: Respiratory system, Oxygen, Vertebrate trachea Pages: 2 (596 words) Published: March 11, 2014
1. What is the main function of the Respiratory system?
The main function of the respiratory system is to take in and supply oxygen to the blood while removing cellular waste (carbon dioxide). 2. Which 2 gases must be exchanged during respiration? Which of these is poisonous? Oxygen and Carbon dioxide must be exchanged during respiration. Carbon dioxide is poisonous. 3. What is the function of mucus and cilia in the respiratory passageways? Cilia is the hairs inside the nose, these trap bacteria, pollen and dust particles. Mucus traps foreign particles and keeps the passages moist. The mucus with the particles is moved by cilia to the mouth where it is swallowed; thus air flowing into the nose is filtered, warmed and moistened before it flows into the pharynx. 4. What is the epiglottis and what does it do?

The epiglottis is the flap that’s protects the airway from food going down it. It closes over the windpipe to prevent our airways becoming blocked with food. 5. What is the difference between:
A. Inhalation and exhalation
Inhalation is the drawing of air into the lungs, whereas exhalation is the passing out of the air. B. breathing and respiration
Respiration is the cellular process of producing energy and breathing is the sucking of air into the lungs as a result of the interaction of the rib cage, the diaphragm and the thorax. C. inspired air and expired air

Inspired air is the air taken into the lungs, which is rich in oxygen and lacking in carbon dioxide. Expired air is air taken out of the lungs which is low in oxygen and high in carbon dioxide. 6. What is meant by the term cardio-pulmonary-resuscitation? If the person stops breathing and the heart has stopped beating, then cardio pulmonary resuscitation (CPR) is carried out. This resuscitation takes into account both the supply of oxygen to the body (breathing) and the distribution of oxygen to the body (circulation). 7. What are the two main functions of an artificial lung...
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