The process that ventilates the lungs includes the alternate inhalation and exhalation of air. This is the mechanism where mammals ventilate their lungs by pulling air into the lungs. This is the volume of air inhaled with each breath.
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- Question 3 Review Concept 42.5. Match the term and its description. Each term can only be used once. This is the pressure exerted by a particular gas in a mixture of gases. I Choose | It is also called windpipe. It connects the larynx and the bronchi. [ Choose J These are the major organs of respiratory system. These are infoldings of the body surface which contain alveoli. [ Choose J These secretions coat the surface of the alveoli. [ Choose ) > > >Question 16 Which of the following is essential for the proper functioning of the lungs? O optimal body temperature O diffusion of carbon dioxide from cells O essential nutrients from our diet sufficient oxygen O adequate atmospheric pressureQuestion 5 2. During inspiration, how does the partial pressure of oxygen in the alveoli changes relative to the deoxygenated blood in the lung capillaries to enable diffusion of oxygen across the alveolar membrane? (Mention if the partial pressure of oxygen is increased or decreased in the alveoli compared to capillary deoxygenated blood during inspiration, and how that affects oxygen diffusion across the alveolar membrane).
- Question 5 Review 42.6. Which statement is true about the control of breathing in humans? All of these statements are correct O Most of the time, it is regulated by involuntary mechanisms. O Blood pH changes can influence breathing. O The neurons responsible for breath regulation are in medulla oblongata.QUESTION 26 Which statement regarding the figure is correct? Atmospheric pressure (Patm) 760 mmHg -F Thoracic wall D 756 В 760 Lung Diaphragm Alveolar pressure (Paly) The transmural pressure labeled A will always be a positive value The alveolar pressure causes the pressure labeled D to change O The pressure labeled B is equal in magnitude to the chest wall recoil The transmural pressure labeled C is opposing the lung recoilbronchioles [ Choose] (Choose] lead to the alveolar ducts, which terminate in the alveoli cilia thin, sensitive structures where actual gas exchange occurs in lungs area that includes the lingual and palatine tonsils at back of mouth includes the visceral and parietal membranes around lungs cellular structures that propel mucus & particles toward pharynx alveoli 1. TChoose ] pleura [ Choose] oropharynx [ Choose ]
- QUESTION 41 What is the net movement of carbon dioxide gas, given the following: Partial pressure of carbon dioxide in the blood Partial pressure of carbon dioxide in the alveolar air = 95 mmHg = 100 mmHg Carbon dioxide will not move because the solubility coefficient for carbon dioxide is too small Carbon dioxide will not move because the concentration gradient is too small Carbon dioxide will move into the blood Carbon dioxide will move into the alveolusQUESTION 1 Match each of the following volumes to their description. tidal volume (TV) expiratory reserve volume (ERV) vital capacity (VC) dead space forced expiratory volume (FEV₁) A. An instrument that records the amount of air inhaled or exhaled B. A record of the volume of air being moved in and out of the lungs C. The volume of air that includes the vital capacity and the residual volume D. The volume of air expelled in the first second of maximal forced expiration from a position of full inspiration. E. The volume of air exhaled when one breathes out as much air as possible after breathing normally. Typically about 1,200 mL. F. The volume of air exhaled when one breathes out as much air as possible and as RAPIDLY as possible after breathing normally. G. The volume of air that remains in the lungs even after the most forceful expiration. This air prevents the lungs from collapsing.Question 106 Match the following spirometric parameters to their definitions Tidal volume v [ Choose ] The amount of air that does not participate in exchange Normal amount of air inspired and expired at rest Dead air space Extra amount of air expired after a normal expiration The amount of air left in both lungs after expiration The amount of inspired air available for lung exchange Alveolar ventilation [ Choose ] Forced expiratory volume [ Choose] Residual volume [ Choose]
- QUESTION 38 Which of the following statements is FALSE? O C The partial pressure of O2 in the alveoli is higher than it is in the pulmonary capillaries so O2 diffuses from the alveoli to the pulmonary capillaries. The partial pressure of CO2 in the alveoli is 40 mm Hg and in the pulmonary capillaries it is 46 mm Hg. Although this is not a big pressure gradient, CO2 is very soluble so it diffuses from the pulmonary capillaries to the alveoli where it then is exhaled. The partial pressure of O2 in the systemic capillaries is higher than it is in the body cells so O2 diffuses from the systemic capillaries to the body cells. The partial pressure of CO2 in the systemic capillaries is higher than it is in the body cells so CO2 diffuses from the systemic capillaries to the body cells. 0Question 6 In patients with pulmonary fibrosis, alveolar thickness is increased (due to tissue necrosis), and the alveolar area is reduced. Explain how increased alveolar thickness and the decreased area would affect the diffusion of oxygen from lung alveoli into capillary blood. (Use Fick’s equation to explain how oxygen diffusion will be affected when alveolar thickness increases and area decreases).QUESTION 38 Which of the following statements is FALSE? O O The partial pressure of O₂ in the alveoli is higher than it is in the pulmonary capillaries so O2 diffuses from the alveoli to the pulmonary capillaries, The partial pressure of CO2 in the alveoli is 40 mm Hg and in the pulmonary capillaries it is 46 mm Hg. Although this is not a big pressure gradient, CO2 is very soluble so it diffuses from the pulmonary capillaries to the alveoli where it then is exhaled. The partial pressure of O₂ in the systemic capillaries is higher than it is in the body cells so O2 diffuses from the systemic capillaries to the body cells. The partial pressure of CO2 in the systemic capillaries is higher than it is in the body cells so CO2 diffuses from the systemic capillaries to the body cells.