1. the average heart beats about 100,000 times a day.
* true
* false
2...
1. the average heart beats about 100,000 times a day.
* true
* false
2. the heart is located inside the ribcage and just to the right of the breast bone.
* true
* false
3. the heart has four chambers and is divided into a right and left side by a muscular wall called the septum.
* true
* false
4. the two atria hold the blood that circulates away from the heart.
* true
* false
5. the heart has four one-way valves, which open and close with each heartbeat.
* true
* false
6. the tricuspid valve and the mitral valve are located between the atria and allow the blood to flow from the atria to the ventricles.
* true
* false
7. arteries carry oxygen-poorblood from the heart to the body’s tissues and organs.
* true
* false
8. since the arteries keep pace with the heart, you can measure the heart rate by counting the contractions of the arteries.
* true
* false
9. capillaries are the largest of all blood vessels.
* true
* false
10. the exchange of oxygen and carbon dioxide takes place through the capillary wall.
* true
* false
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