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  1. heart is the pump that keeps blood circulating properly. Americans today have many options to take care of their heart and circulatory system. Expanding medical technology has made it much easier to do so. This chapter is dedicated to the heart and its many parts. The Heart The heart is a hollow, muscular organ about the size of a fist.

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  2. The cardiovascular system consists of two circuits: the pulmonary circulation, from the right ventricle to the lungs and then to the left atrium; and the systemic circulation, from the left ventricle to all peripheral organs and tissues and then to the right atrium. Arteries carry blood away from the heart, and veins carry blood toward the heart.

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  3. billions of tiny tubes the circulatory system transports substances around our bodies. It delivers essential nutrients to every cell, and it transports waste products to waste -disposal sites—the lungs, the skin, and the kidneys. The circulatory system is an organ system that includes the heart, the blood vessels, and the blood itsel f. It has

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  4. Heart. The heart is a muscular organ in the chest. It consists mainly of cardiac muscle tissue and pumps blood through blood vessels by repeated, rhythmic contractions. As shown in Figure 17.2.3 17.2. 3, the heart has four inner chambers: a right atrium and ventricle and a left atrium and ventricle.

  5. The cardiovascular system is transport system of body. It comprises blood, heart and blood vessels. The system supplies nutrients to and remove waste products from various tissue of body. The conveying media is liquid in form of blood which flows in close tubular system.

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  6. 91OVERVIEW OF THE CARDIOVASCULAR SYSTEMThe cardiovascular system consists of the heart as a pump, blood vessels that take blood awayfrom the heart (arteries), and blood vessels t. at take blood back to the heart (veins). Locate the heart on. the illustration and color it in purple. Label the c.

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  8. A network of tiny capillaries connects the arteries and veins, delivers nutrients and oxygen to the cells, and removes waste products such as carbon dioxide. In the lungs, gases are exchanged between capillary walls and millions of tiny air sacs called alveoli. High blood pressure is also called hypertension. Name:

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