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dalvyx [7]
3 years ago
15

Help me please! 10 points!!!!!

Biology
1 answer:
iris [78.8K]3 years ago
5 0

Option 2 is the only option that makes sense. It is asking about what the nervous system (the brain) sent to the circulatory system (blood vessels). The legs would need more blood flow in order to keep the leg muscles oxygenated.

Option 1 is incorrect because if there is less blood flow to the legs, the muscles would tense up and you would not be able to run.

Option 3 is incorrect because it says the heart sends signals to the brain, which is not what the question was asking.

Option 4 is incorrect because the heart would start beating faster as your run a marathon in order to keep the body properly oxygenated.

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The Best-Correct Statements as it Pertains to the Control Group and Experimental Group are:

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<h3 />

What are the control and experimental group in a study?

The control group in a study is the group in which no changes are applied to the group.

In the control group, the variables are kept constant, hence, the control group is also known as the constant group.

The experimental group in a study is the group to which the treatment being studied is applied. The control group receives the treatment of the variable under study.

Hence, the group that receives the drug 911-918 is the experimental group.

Learn more about the control and experimental group at: brainly.com/question/26323529

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