Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 21, Problem 8MC
Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by (a) active transport, (b) diffusion, (c) filtration, (d) osmosis.
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Chapter 21 Solutions
Anatomy & Physiology (6th Edition)
Ch. 21.1 - Prob. 1CYUCh. 21.1 - Which part of the pharynx houses the pharyngeal...Ch. 21.2 - Which structure seals the larynx when we swallow?Ch. 21.2 - Which structural features of the trachea allow it...Ch. 21.2 - What features of the alveoli and their respiratory...Ch. 21.2 - A 3-year-old boy is brought to the emergency...Ch. 21.3 - The lungs are perfused by two different...Ch. 21.3 - Prob. 8CYUCh. 21.4 - What is the driving force for pulmonary...Ch. 21.4 - What causes the intrapulmonary pressure to...
Ch. 21.4 - What causes the partial vacuum (negative pressure)...Ch. 21.4 - Premature infants often lack adequate surfactant....Ch. 21.5 - Explain why slow, deep breaths ventilate the...Ch. 21.5 - Prob. 14CYUCh. 21.6 - You are given a sealed container of water and air....Ch. 21.6 - PO2 in the alveoli is about 56 mm Hg lower than in...Ch. 21.6 - Suppose a patient is receiving oxygen by mask. Are...Ch. 21.7 - Prob. 18CYUCh. 21.7 - What is the relationship between CO2 and pH in the...Ch. 21.7 - The dotted lines in the two graphs below represent...Ch. 21.8 - Which brain stem respiratory area is thought to...Ch. 21.8 - Prob. 22CYUCh. 21.9 - An injured soccer player arrives by ambulance in...Ch. 21.9 - Prob. 24CYUCh. 21.10 - What distinguishes the obstruction in asthma from...Ch. 21 - Cutting the phrenic nerves will result in (a) air...Ch. 21 - Which of the following laryngeal cartilages is/are...Ch. 21 - Prob. 3MCCh. 21 - The detergent-like substance that keeps the...Ch. 21 - Which of the following determines the direction of...Ch. 21 - When the inspiratory muscles contract, (a) the...Ch. 21 - The nutrient blood supply of the lungs is provided...Ch. 21 - Oxygen and carbon dioxide are exchanged in the...Ch. 21 - Which of the following would not normally be...Ch. 21 - Most oxygen carried in the blood is (a) in...Ch. 21 - Which of the following has the greatest...Ch. 21 - In mouth-to-mouth artificial respiration, the...Ch. 21 - Prob. 13MCCh. 21 - Prob. 14MCCh. 21 - Damage to which of the following would most likely...Ch. 21 - Prob. 16MCCh. 21 - Trace the route of air from the nares to an...Ch. 21 - (a) Why is it important that the trachea is...Ch. 21 - Briefly explain the anatomical reason why most men...Ch. 21 - The lungs are mostly passageways and elastic...Ch. 21 - Describe the functional relationships between...Ch. 21 - Discuss how airway resistance, lung compliance,...Ch. 21 - (a) Differentiate clearly between minute...Ch. 21 - Prob. 24SAQCh. 21 - (a) Define hyperventilation. (b) If you...Ch. 21 - Prob. 1CCSCh. 21 - Prob. 2CCSCh. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Prob. 5CCSCh. 21 - Prob. 6CCSCh. 21 - Prob. 7CCS
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- a)Draw a flow chart or diagram to illustrate how oxygen would move from the air into the body cells and how carbon dioxide would be removed. b)What is the end result of cellular respiration and why is this important in the body?arrow_forwardWhat are the most two important gases that must have a normal concentration inside the body? a.)Carbon dioxide and Hydrogen b.)Carbon dioxide and Oxygen c.)Hydroxide and Carbon d.)Hydrogen and Nitrogenarrow_forwardAs the diameters of the respiratory airways decrease, which of the following is observed? a) There is an increase in cartilage support O b) Pseudostratified columnar epithelium becomes simple cuboidal epithelial linings O c) The epithelium becomes more ciliated d) There are less mucus secreting goblet cells in the epithelial liningarrow_forward
- Which of the following mechanisms is not likely to be useful for ventilation in air? A) Ram ventilation B) A and B are not useful C) External medium movement D) None of the choices is useful E) Ciliaarrow_forwardRespiratory acidosis can occur when_____ a ) the kidneys secrete hydrogen ions b ) a runner has completed a very long marathon c ) a person's breathing is shallow due to obstructionarrow_forwardHow many oxygen molecules bound to hemoglobin to give 50% saturation?a) 6b) 4c) 2d) 7arrow_forward
- The ability of hemoglobin to deliver oxygen is enhanced because: A) The partial pressure of oxygen is lower in most tissues than it is in the lungs OB) The metabolic activity in most tissues lowers the pH of the blood C) The metabolic activity of tissues increases carbon dioxide levels D) All of the above E) b and c onlyarrow_forwardWhich of these represents the pressure in the serous fluid in the pleural cavities? a) P tp b) P alv c) P ip d)P atmarrow_forwardWhich of the following factors can affect the ability of a respiratory organ to exchange gases with the environment? A) The thickness of the membrane B) The surface area of the membrane C) The concentration gradient of the gases D) The amount of water on the membrane E) All choices are correct F) A, B, and C are correctarrow_forward
- Typed solution onlyarrow_forwardWhich of the following statements are TRUE: Very low oxygen levels will cause: a) Myoglobin instead of hemeglobin will be used to transfer oxygen to cells b) You might experience feelings similar to sickle-cell anemia c) You might have a higher total concentration of hemeglobin to help transport enough oxygen. d) Oxygen will be more concentrated in the air, resulting in higher saturation of hemeglobinarrow_forwardName the process of gaseous exchange in the body.a) Lymphatic systemb) Respirationc) Cardiovascular systemd) Respiratory systemarrow_forward
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