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Which of the following substances does the blood transport from the tissues to the heart and then to the lungs to be expired?

A. Hormones
B. Carbon dioxide
C. Glucose
D. Oxygen


Sagot :

Final answer:

Blood transports carbon dioxide from tissues to the heart and then to the lungs for expiration.


Explanation:

Carbon dioxide is the substance that the blood transports from the tissues to the heart and then to the lungs to be expired.

Carbon dioxide is carried in the blood by various methods such as dissolution directly into the blood, binding to hemoglobin, or being carried as a bicarbonate ion. When it reaches the lungs, carbon dioxide can be expelled from the body.


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