Bio 1030 Exam 3 Study Questions with Correct Answers

What is the primary function of the respiratory system? What are three other functions of the respiratory system? The primary function of the respiratory system is the exchange of gasses (respiration). Obtaining oxygen and removing carbon dioxide. Other three are 1) filtration 2)Produces sound (air moves past vocal chords) 3) Sense of smell Explain the five processes that result in gas exchange between the atmosphere and your internal body cells. (unidirectional) #1. Ventilation- Breathing. Air coming in and out of the lungs. #2. External Respiration- Gas exchange. Air and blood in the lungs. #3. Gas Transport- To body cells #4. Internal Respiration- Exchange of gasses between blood/tissue cells #5. Cellular Respiration- Using oxygen and producing carbon dioxide as a waste product. Why is better to breath in through your nose as compared to your mouth? Breathing through your nose filters the incoming air better than breathing through your mouth. This is because of the air and mucus in your nose. Also breathing through your nose humidifies the air better than mouth breathing. Describe the series of spaces/tubes air travels through from your nose to your circulatory system. #1. Nose #2. Pharynx- #3. Larynx #4. Trachea -Main wind pipe that branches into bronchi #5. Bronchi #6. Bronchioles #7. Alveoli -Spongy grape looking things Gas exchange What is the common area where the nostril tube meets the mouth tube? (comes into contact with air, liquid, and food) Pharynx Which pulmonary structure is the site of gas exchange with the capillaries? Alveoli. (one cell thick)