<span>The correct answer is A. In a vertical relationship, one person is above another in a power hierarchy, hence the description ‘vertical’.</span>
Answer: A bone like structure that carries blood around the body. Other veins and bones send the blood recieved from another bone into another bone. This is how it works.
Explanation:
Hope my answer helps you.
Answer:
1. Electrical impulses in the heart cause the muscle to contract.
2. To keep the blood flowing in only one direction
Explanation:
In the first question, the correct answer is ''Electrical impulses in the heart cause the muscle to contract''. Every muscle in our body contracts because of electrical impulses and this is also true for our hearts. Or any hearts in nature that we know of.
In the second question, the answer is ''To keep the blood flowing in only one direction''. We have those valves and without them, we wouldn't be able to function as we do.