Question

Can somebody answer this please

Answer 1

Answer:

1. Pericardial cavity

2. Pump

3. Blood

4. Oxygenated Blood

5. Arteries

6. Body

7. Veins

8. Carbon dioxide

9. Exercise

10. Fatty

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Answer 2

Answer:

1. The heart lies within the pericardial cavity, in the middle mediastinum. The pericardial cavity is similar in structure and function to the pleural cavity.
2. The heart is a pump
3. The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
4. The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
5. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
6. Body
7. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
8. Carbon dioxide
9. Blood
10. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium (RA), or the right upper chamber of the heart.
11. High cholesterol levels increase your risk for developing cardiovascular disease, but that's not all. Unhealthy cholesterol in the blood can also lead to heart attack and stroke, according to the American Heart Association.

Explanation:

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