What is the exchange of gases between the blood and tissue cells?
A. Internal respiration
B. Posterior respiration
C. External respiration
D. None of the above
A?
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so it is A?
Yes, it is A.
ok thank you
Yes, the correct answer is A. Internal respiration.
To arrive at this answer, we need to understand the process of gas exchange in the body.
Gas exchange refers to the movement of oxygen from the environment into the body, and the removal of carbon dioxide from the body into the environment. In general, there are two types of gas exchange that occur in the body:
1. External respiration: This is the exchange of gases that occurs between the lungs and the blood. In this process, oxygen from the inhaled air enters the blood in the capillaries surrounding the alveoli (tiny air sacs in the lungs), while carbon dioxide, a waste product, diffuses from the blood into the alveoli to be expelled during exhalation.
2. Internal respiration: This is the exchange of gases that occurs between the blood and the tissue cells throughout the body. After oxygen is picked up by the blood in the lungs during external respiration, it is transported by red blood cells to various tissues and organs. At the tissue level, oxygen diffuses from the blood capillaries to the individual cells, where it is used in cellular respiration. At the same time, carbon dioxide, produced as a waste product during cellular respiration, diffuses from the cells into the blood capillaries to be transported back to the lungs for elimination.
Therefore, option A, Internal respiration, is the correct answer as it describes the exchange of gases between the blood and tissue cells.