Question 7 Review Concept 42.7. The loading and unloading of respiratory gasses are driven by partial pressure gradients. Respiratory gases diffuse from high partial pressure region to lower partial pressure region. O True O False
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- 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 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 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 recoil
- 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 2 The chest wall transmural pressure Atmospheric pressure (Patm) = 760 mmHg F Thoracic wall [D G 756 760 Lung A Diaphragm Alveolar pressure (Paly) equals -4 mm Hg equals 0 mm Hg cannot be determined by the information provided in this figure equals +4 mm HgQuestion 2 Vital capacity minus the tidal volume minus the expiratory reserve volume yields the OA. Tidal volume O B. Dead space OC. Inspiratory reserve volume OD. Residual volume O E. Vital capacity
- bronchioles [ 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 12 Which of the following about the pleural sacs is incorrect? O Provide lubrication between moving organs O Compartmentalize thoracic cavity O Comprised of triple-layered membrane of stratified squamous epithelium O Intrapleural pressure keeps lungs partially expanded at all times O One sac per lung, which are stuck to lung, chest wall, and diaphragm • PreviousQuestion 29 Find us The partial pressures of in venous and arterial blood in the pulmonary circulation is O A. Oxygen, 46 mmHg, 40 mmHg O B. Carbon dioxide, 40 mmHg, 46 mmHg O C. Oxygen, 40 mmHg, 46 mmHg O D. Carbon dioxide, 46mmHg, 40 mmHg OE. Oxygen, 100 mmHg, 150 mmHg and
- 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.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 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]