Respiratory System Detailed Exam 2

What force causes oxygen to enter the alveoli? - Correct Ans-negative pressure; air is sucked into the lungs as the lungs expand Inhalation results when the: - Correct Ans-intercostal muscles and diaphragm contract and make the chest cavity bigger. Oxygen and carbon dioxide cross the actual lung membrane surface in to the pulmonary capillaries through: - Correct Ans-diffusion Pick the correct order for the path followed by Trevor (an oxygen molecule) as he travels from the outside to the lungs: 1. primary bronchi 2. laryngopharynx 3. nasal cavity 4. external nares 5. glottis 6. oropharynx 7. secondary bronchi 8. larynx 9. nasopharynx 10. trachea - Correct Ans-4, 3, 9, 6, 2, 5, 8, 10, 1, 7 Place the following in their correct order from the outside to inside: 1. lungs 2. pleural cavity 3. visceral pleura 4. parietal pleura - Correct Ans-4, 2, 3, 1 Pleurisy results from an accumulation of fluid in the: - Correct Ans-pleural cavity. The flap of tissue that closes to prevent food from entering the trachea during swallowing is the ________. - Correct Ans-epiglottis The condition whereby the respiratory alveoli become enlarged and may be replaced by fibrous tissue is known as _____________. - Correct Ans-emphysema The glottis is ___________________. - Correct Ans-space between the vocal cords. The largest amount of carbon dioxide is carried in the blood in the form of: - Correct Ans-bicarbonate ions The nose: 1. moistens the air 2. warms the air 3. filters the air 4. contains the olfactory receptors - Correct Ans-All of (1), (2), (3), and (4) above are correct. The tidal volume is air: - Correct Ans-Exhaked during normal breathing, and inhaled during normal breathing The volume of air, over the tidal volume, that can be forced into the lungs is called the: - Correct Ans-inspiratory reserve volume. What is average vital capacity? - Correct Ans-The volume of air that can be expelled from the lungs by forcible expiration after the deepest possible inspiration; total exchangeable air. What is the form of hemoglobin that is responsible for carrying oxygen? - Correct Ans-oxyhemoglobin What prevents food from entering the trachea? - Correct Ans-epiglottis What supplies the force responsible for normal expiration? - Correct Ans-elastic recoil of the diaphragm Where are the respiratory control centers located? - Correct Ans-medulla and pons Where would carbon dioxide concentration be the highest? - Correct Ans-pulmonary artery blood Which of the following is a substance found in cigarette smoke that interferes with the ability of the blood to transport oxygen? - Correct Ans-carbon monoxide