Circulatory System.  Made up of the Heart, blood vessels and blood  Carries needed materials to cells (oxygen) and carries waste products away from.

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Presentation transcript:

Circulatory System

 Made up of the Heart, blood vessels and blood  Carries needed materials to cells (oxygen) and carries waste products away from cells

 Heart-Muscular organ that pumps blood throughout the body  Each time the heart beats it pushes blood through the vessels of the cardiovascular system.  Valve- A flap of tissue that prevent blood from flowing backward inside the heart.

 Atrium- receives blood that comes into the heart.  Ventricle- Lower chamber. Pumps blood out of the heart into the body.

 Arteries- Carry blood away from the heart (O2 rich)  Veins- Carries blood to the heart.  Capillaries- Any vessel where substances are exchanged between blood and body cells.

 Pacemaker- put inside the body. Controls the need for O2  Blood Pressure- The force in which the valves shut.  Hypertension- Higher blood pressure than normal

 Network of vein like vessels that return fluid to the bloodstream.  Lymph nodes- Small nodes of tissue- traps bacteria.  Lymph nodes may enlarge when they are helping the body fight infection.

 Cardiovascular health can be maintained by strengthening the heart muscle through regular exercise.  Eating Right

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