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Romashka [77]
3 years ago
7

Crack is classified as a

Health
2 answers:
Dovator [93]3 years ago
5 0
Crack is a Stimulant drug, so A.
iVinArrow [24]3 years ago
3 0

The correct answer is A, stimulant.

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Which function of the circulatory system is necessary for the respiratory system to complete gas exchanges in the body?
mestny [16]

Answer:

The function of the circulatory system necessary for the respiratory system to complete the exchanges of gases in the body is red blood cells carrying oxygen away from the lungs (option D)

Explanation:

The respiratory and circulatory systems are related because the supply of oxygen (O₂) to the entire body depends on them, in addition to allowing the expulsion of carbon dioxide (CO₂).

The function of the circulatory system that allows gas exchange in the body and contributes to respiratory function are the red blood cells, which carrying O₂ away from the lungs.

<u>Red blood cells or erythrocytes</u> contain a molecule, hemoglobin, which is responsible for transporting O₂ to the body and removing CO₂ from the tissues to be carried to the lungs for expulsion.

The other options are not correct because:

<em>     A and B. White blood cells are not in charge of transporting respiratory gases.</em>

<em>     A and C. The exchange of gases does not occur directly to the atmosphere.</em>

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Explanation:

You can calculate your maximum heart rate by subtracting your age from 220. For example, if you're 45 years old, subtract 45 from 220 to get a maximum heart rate of 175. This is the average maximum number of times your heart should beat per minute during exercise.

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