Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 46, Problem 2TYK
Summary Introduction
Introduction:
The interface between the body of an animal and the respiratory medium is known as the respiratory surface. It is made up of epithelial and pulmonary capillary endothelial cells.
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which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
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Chapter 46 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 46.1 - Distinguish between the roles of the respiratory...Ch. 46.1 - What is an advantage of water over air as a...Ch. 46.2 - What advantages do gills confer on a...Ch. 46.2 - Prob. 2SBCh. 46.2 - Prob. 3SBCh. 46.2 - Distinguish between positive pressure breathing...Ch. 46.3 - Prob. 1SBCh. 46.3 - Prob. 2SBCh. 46.3 - Prob. 3SBCh. 46.4 - Explain the role of hemoglobin in gas exchange.
Ch. 46.4 - Prob. 2SBCh. 46.5 - What are the key evolutionary adaptations that...Ch. 46 - Prob. 1TYKCh. 46 - Prob. 2TYKCh. 46 - Prob. 3TYKCh. 46 - Prob. 4TYKCh. 46 - Prob. 5TYKCh. 46 - Prob. 6TYKCh. 46 - Prob. 7TYKCh. 46 - Oxygen enters the blood in the lungs because...Ch. 46 - Prob. 9TYKCh. 46 - Prob. 10TYKCh. 46 - Prob. 11TYKCh. 46 - Prob. 12TYKCh. 46 - Prob. 13TYKCh. 46 - Prob. 14TYKCh. 46 - Prob. 15TYKCh. 46 - Lycopene, which is abundant in tomatoes, is...Ch. 46 - Prob. 2ITD
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- In the lungs of mammals, airways branch into a series of narrowing tubes that end in Alveoli. How does gas exchange occur between alveoli and blood capillaries?arrow_forwardThe atmosphere that we breathe is about 21% oxygen, and our respiratory system has evolved to allow us to thrive at that concentration. However, breathing air with a lower concentration of oxygen is difficult for us, or even fatal (although some other animals can do it). Using your knowledge of normal human respiration, describe two specific modifications to our respiratory system that might improve our respiratory function and allow us to survive at lower oxygen levels (hint: think about things like diffusion, surface area, and oxygen-carrying ability).arrow_forwardWhich Of the followings are TRUE? Select one: O a. Cellular respiration - Gas exchange between blood and tissue cells b. Pulmonary ventilation – Conducting zone O c. Respiratory zones Site of gas exchange O d. Internal respiration - CO2 is used by the cells O e. External respiration - Continuous replacement of gases in alveoli One of the following are not correct ?arrow_forward
- In insects, O₂ moves from the gas exchange surface to the cells primarily by: A. Diffusion B. Active transport C. Convection D. Conduction E. None of the abovearrow_forwardDoes oxygen diffuse into the blood through human skin? Select one: a. No b. Yesarrow_forwardMountain climbers often use the expression “thin air” to describe atmospheric conditions at high elevation. For example Jon Krakauer’s book Into Thin Air is about a deadly climbing expedition to Mount Everest. What does it mean to say the air gets “thinner” as you climb upward? Explain the reason why the air gets “thinner” with increasing altitude. Briefly explain why it becomes difficult to breathe in “thin” air. Your answer should include something about the human physiology of breathing and why it is more difficult when the air is "thinner."arrow_forward
- The alveoli of mammalian lungs do not contain 20.9% O2 (that is, the percentage of O2 in atmospheric dry air) because A. there is dead space in the trachea and bronchial tree and the air in the lungs is humidified. B. mammals do not normally ventilate the lungs at a high enough rate. C. the trachea and bronchi are too small in volume to contain this amount of O2. D. mammal lungs have too many alveoli to ventilate. E. some O2 has been exchanged with the blood before reaching the alveoli.arrow_forwardAll vertebrates breathe with either gills or lungs. Which is a property of gills only and not lungs?arrow_forwardRespiratory organs of invertebrates and vertebrates are similar in that a. they use negative pressure breathing. b. they take advantage of countercurrent flow systems. c. they increase the surface area available for diffusion. d. the air flows through the organ in one direction.arrow_forward
- Our human hemoglobin is 100% saturated near the alveoli and 80% saturated after passing through the systemic capillaries and moving back into the veins. By contrast, an extraterrestrial friend's oxygen-binding molecule is 100% saturated near their alveoli and 60% saturated after passing through their systemic arteries and moving back into the veins. How does his hemoglobin compare to yours? a. they deliver a larger share of oxygen to their tissues at rest b. the partial pressure of O2 in their alveoli is higher than ours c. the oxygen- binding molecule in their circulatory system is worse than ours d. the partial pressure of O2 in their tissue is lower than oursarrow_forwardAt which point in the mammalian circulatory system does the partial pressure of oxygen in the blood experience its greatest increase? A. in the arteries of the heart B. in the pulmonary veins C. in the pulmonary capillaries D. in the pulmonary arteries E. in the aortaarrow_forwardCutaneous breathing restricts several components of both the organism and environment. Which of the follow are true? a. Group of answer choices b. typically only possible in dry environments c. restricts the size of the organism d. organism must have highly vascularized skin e. cutaneous breathing is well suited to aquatic environmentsarrow_forward
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