Carotid bodies are A) organs located in the medulla region of the brain. B) small organs located in arteries which are sensitive to oxygen levels. C) chemoreceptors which respond to H⁺ ion concentration. D) central chemoreceptors which contain neurotransmitters which are released in response to changes in the partial pressure of oxygen. E) organs with a primary function to transmit information from the central nervous system to reflect ventilation requirements.

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Carotid bodies are small organs located in the carotid arteries that are sensitive to changes in blood oxygen levels. They act as peripheral chemoreceptors, detecting changes in the partial pressure of oxygen and helping regulate respiratory activity.

Carotid Bodies Are