What exactly do you need help with?
Answer:With this system, blood always flows in only one direction inside the heart. There are also valves at the bottom of the large arteries that carry blood away from the heart: the aorta and the pulmonary artery. These valves keep the blood from flowing backward into the heart once it has been pumped out.
Explanation:
The correct answer for this would be C.fat, because the least in a healthy body composition would be fat! Hope this helps!
Use reliable <span>resources to look up symptoms or other health information</span>
I would have to say B. open palm of your hand
Only because it's portions for different size people.
A child portion would be different from an adult portion, and the palm is the only thing that measures by the size of the person.
<span><span>Hope this helps. :)</span>
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