Question: Order the statements below to describe how CO2 levels in the blood control ventilation rate throu…


Order the statements below to describe how CO2 levels in the blood control ventilation rate through negative feedback. Increased contraction leads to hyperventilation and so blows off the CO2 The raised H1 (lpH) is sensed by the central chemoreceptors in the medulla which sends 2 a signal to the respiratory pacemaker also located in the medulla 3 muscles (mainly the diaphragm), leading to increased contraction. 4 anhydrase catalyses CO2 + H2O- H2COg . H+ + HC03. The respiratory pacemaker sends a signal to the nerves that innervate the inspiratory The CO2 crosses the blood-brain barrier and enters the brain ECF (CSF), where carbonic This lowers the arterial pCO2 (<40mm Hg) and so relieves the stimulus The stimulus is an increase in arterial pCO2 to exceed 40mm Hg 6,3,2, 5, 6,4 0 1, 2,3,4, 5,6 O 2,5, 3,1,4,6 0 6,4,2,3, 1,5 O3,1,5,2,4,6

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Order the statements below to describe how CO2 levels in the blood control ventilation rate through negative feedback. Increased contraction leads to hyperventilation and so blows off the CO2 The raised H'1 (lpH) is sensed by the central chemoreceptors in the medulla which sends 2 a signal to the respiratory pacemaker also located in the medulla 3 muscles (mainly the diaphragm), leading to increased contraction. 4 anhydrase catalyses CO2 + H2O- H2COg . H+ + HC03. The respiratory pacemaker sends a signal to the nerves that innervate the inspiratory The CO2 crosses the blood-brain barrier and enters the brain ECF (CSF), where carbonic This lowers the arterial pCO2 (

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