Which of these conditions would stimulate the chemoreceptor reflex?Multiple ChoiceBoth "Increased carbon dioxide content of the blood" and "Decreased pH of the blood" are correct.Decreased pH of the bloodAll of the choices are correct.Increased oxygen content of the bloodIncreased carbon dioxide content of the blood
Question
Which of these conditions would stimulate the chemoreceptor reflex?Multiple ChoiceBoth "Increased carbon dioxide content of the blood" and "Decreased pH of the blood" are correct.Decreased pH of the bloodAll of the choices are correct.Increased oxygen content of the bloodIncreased carbon dioxide content of the blood
Solution
Both "Increased carbon dioxide content of the blood" and "Decreased pH of the blood" are correct.
Chemoreceptors are specialized cells that respond to changes in chemical composition of the body. They are particularly sensitive to changes in the levels of oxygen, carbon dioxide, and pH in the blood.
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Increased carbon dioxide content of the blood: When the level of carbon dioxide in the blood rises, it can lower the pH of the blood, making it more acidic. This is detected by the chemoreceptors, which then stimulate the respiratory center in the brain to increase the rate and depth of breathing to expel more carbon dioxide and return the blood pH to normal.
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Decreased pH of the blood: A decrease in blood pH (making it more acidic) can also be caused by factors other than increased carbon dioxide, such as metabolic acidosis. This would also stimulate the chemoreceptor reflex to increase respiration and return the blood pH to normal.
Therefore, both these conditions would stimulate the chemoreceptor reflex.
Similar Questions
The chemoreceptor reflexesMultiple Choicecause a decrease in blood flow to the lungs.cause a decrease in blood flow to the heart.helps decrease blood oxygen levels.cause an increase in blood flow to the lungs.Both "cause a decrease in blood flow to the lungs." and "cause a decrease in blood flow to the heart." are correct.
Which of these factors would cause an increase in heart rate?Multiple ChoiceIncreased parasympathetic stimulationA decrease in carbon dioxide in the bloodStimulation of baroreceptors in the aortaExcess potassium ionsA decrease in blood pH
9) Which of the following is true?a) Peripheral chemoreceptors increase firing with low arterial PO2 but are notsensitive to an increase in arterial PCO2.b) The primary stimulus to the central chemoreceptors is low arterial PO2.c) Peripheral chemoreceptors increase firing during a metabolic alkalosis.d) The increase in ventilation during exercise is due to a decrease in arterial PO2.e) Peripheral and central chemoreceptors both increase firing when arterial PCO2increases.
Which of the followig would increase the pH of the blood? high intensity exercise resulting in the production of CO2. decreased ventilation causing a build up of CO2. increased ventilation at the lung to remove CO2. a higher ventilation to perfusion ratio (V/Q) in the lung.
is the following statement correct Increased carbon dioxide levels in the blood lead to decreased pH, making the blood more acidic.
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