High School

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Which of the following receptors is stimulated by an increase in carbon dioxide?

1) Baroreceptors
2) Peripheral chemoreceptors

Answer :

Peripheral chemoreceptors are stimulated by an increase in carbon dioxide and trigger an increase in respiratory rate and depth to maintain proper blood gas levels and pH balance. The correct option is 2.

The receptor stimulated by an increase in carbon dioxide is the peripheral chemoreceptor. Peripheral chemoreceptors located in the carotid arteries and aortic arch are sensitive to large changes in the blood levels of carbon dioxide, oxygen, and pH. When there is an increased concentration of carbon dioxide, these chemoreceptors stimulate the respiratory centers of the brain to increase the rate and depth of respiration. This allows more carbon dioxide to be expelled in an effort to regulate the levels of carbon dioxide and pH within the blood. The response of peripheral chemoreceptors is essential for maintaining homeostasis in response to the metabolic demands of the body.

In summary, the peripheral chemoreceptors are the ones that respond to increasing levels of carbon dioxide by stimulating an increase in respiratory activity, which helps to manage pH levels and maintain a stable internal environment. The correct option is 2.

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