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Dictionary

carot'id si"nus

Anat.
specialized nerve end organs producing a slight dilatation of the carotid artery where it branches into the external and internal carotid arteries, responding to changes in blood pressure by mediating changes in the heartbeat rate.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

carotid body

carotin

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