Circulatory system
Made up of
Blood vascular system
Lymph vascular system
The heart
-responsible for keeping the blood moving within the circulatory system.
– enclosed by a membrane called the pericardium.
-about the size of a closed fist.
-right and left atrium are in the upper half of the heart.
-right and left ventricle are in the lower half of the heart.
-valves between chambers allow blood to flow in one direction only.
-pulmonary circulation sends blood from the heart to the lungs to be purified.
-systemic or general circulation carries blood from the heart throughout the body and back to the heart.
Blood vessels– carry blood to and from the heart, and to and from various body tissues
Arteries– carry oxygenated blood away from the heart to the capillaries.
Capillaries– small, connect small arteries to veins. They bring nutrients to cells and carry away waste materials.
Veins– carry blood from capillaries back to the heart.
Lymph
– Acts as an aid to the blood system.
– Carries nourishment from the blood to body cells.
– Acts as a defense against invading bacteria and toxins.
– Removes waste material.
– Provides a suitable fluid environment for the cells.
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