Which one is true about gas exchange? Determining partial pressures enables us to hinder and stop the net movement of a gas at an exchange surface We breathe in carbon dioxide and breathe out oxygen. A gas always undergoes net diffusion from a region of higher partial pressure to a region of lower partial pressure. Partial pressure is pressure exerted by all gas present in a mixture of gases

Which one is true about gas exchange? Determining partial pressures enables us to hinder and stop the net movement of a gas at an exchange surface We breathe in carbon dioxide and breathe out oxygen. A gas always undergoes net diffusion from a region of higher partial pressure to a region of lower partial pressure. Partial pressure is pressure exerted by all gas present in a mixture of gases

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter46: Gas Exchange: The Respiratory System

Section: Chapter Questions

Problem 5TYK

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Similar questions

Due to its partial pressure gradient, carbon dioxide diffuses from cells into tissue fluid and into the ________; in the lungs, carbon dioxide diffuses into the ________. a. alveoli; bronchioles b. bloodstream; bronchioles c. alveoli; bloodstream d. bloodstream; alveoli
Gas exchange that occurs at the level of the tissues is called ________. external respiration inteipulmonarv respiration internal respiiation pulmonary ventilation
A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the above
Of the following, which does not explain why the partial pressure of oxygen is lower in the lung than in the external air? Air in the lung is humidified; therefore, water vapor pressure alters the pressure Carbon dioxide mixes with oxygen Oxygen is moved into the blood and is headed to the tissues Lungs exert a pressure on the air to reduce the oxygen pressure.
During inhalation, ________. a. the thoracic cavity expands d. the diaphragm relaxes c. atmospheric pressure declines d. the lungs deflate
The respiratory components of the medulla consist of which of the following? Dorsal respiratory group Apneustic center Ventral respiratory group Pneumotaxic center 1 only 2 only 1 and 3 only 2 and 4 only
In a _______, air flows continually across the respiratory surface. a. fish b. bird c. frog d. mammal
In a _______, air flows continually across the respiratory surface. a. fish b. bird c. frog d. mammal
Oxygen in air must diffuse across______ to enter the blood. a. pleural sacs b. alveolar sacs c. a moist respiratory surface d. both b and c
Watch this animation (http://openstaxcollege.org/l/swallowing) to see how swallowing is a complex process that involves the nervous system to coordinate the actions of upper respiratory and digestive activities. During which stage of swallowing is there a risk of food entering respiratory pathways and how is this risk blocked?
Describe the function of these terms and describe where they are located: main bronchus, trachea, alveoli.
The ________ is an airway that connects the nose and mouth with the ________. a. oral cavity; larynx b. pharynx; trachea c. trachea; pharynx d. pharynx; larynx