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1. blood travels from the heart to the lungs through the pulmonary arteries
2. The heart's natural pacemaker is the sinoatrial node
3. The nasal cavity warms and moistens incoming in ir- nasal meatuses
regularly shaped pockets or air spaces called the
4. The movement of blood to and from the kidneys is renal circulation
5. The blood cells that transport oxygen throughout the red blood cells
body are
6. The blood cells that protect the body from infections white blood cells
are
7. Large blood vessels that carry blood from the body venae cavae
into the right atrium of the heart are the
8. The blood protein that helps in the blood clotting fibrinogen
process is
9. The left atrium and the left ventricle of the heart are bicuspid valve
connected by the
10. Blood leaves the left ventricle through the aortic semilunar valve
11. most cases of lung cancer in the US are caused by cigarette smoking
12. Breathing is controlled primarily by medulla oblongata
13. The tough, white sac that encloses and protects the pericardium
hearts is the
14. The muscle layer of the heart is the myocardium
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