(Answers)
1. The heart weighs between 7 and 15 ounce, and is a little larger than the size of your fist. It's the muscle at the centre of your circulatory system, pumping blood around your body as your heart beats; this blood sends oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products.
2. It has four chambers. They're: right atrium, right ventricle, left atrium, and left ventricle.
3. They're important because they prevent blood from flowing in the wrong direction
4. Oxygenated blood can be simply defined as a blood cell with large percentage of oxygen and low in carbon dioxide. Oxygen-rich blood flows from the lungs back into the left atrium or left upper chamber of the heart, through four pulmonary veins
5. Deoxygenated blood refers to the blood that has a low oxygen saturation relative to blood leaving the lungs. Deoxygenated blood is received from the systemic circulation into the right atrium.
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saan po Yung sasagutan Jan po?
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TANONG ko lang po
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pa BRAINLIEST po thanks sa points