Science

So I have a question that I would like to have checked, and then I have a question that I need help with. Please understand I am not looking for answers or a link, I am looking for someone to help me understand what the question is asking and how to answer it.
1.) Identify the systems of your body that help your body move, and explain how they work together.
I said:
The systems that help your body move are the skeletal and muscular systems. The skeletal system is the base of your body. Without it, you would be a limp thing that wouldn't be able to move. The muscular system is what helps the body move like it does. Your brain sends a signal to the bone to move, and the muscles around it contract to make it happen.

2.)Describe the flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through the different locations of the body.

The second one is the one I need help with. Again, I don't want a link or the answer, I want a straight explanation from somone who understands.

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  1. A science tutor may come online to help you. Until then, you should go to https://khanacademy.org — in the upper left corner, click on Courses. Find Biology and choose what you need help with. There’s also a search feature. Search for circulatory system and/or any other topic you need to learn about or review.

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