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Human Autonomy

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s made up major components; Heart, Blood vessels and
HEART:Heart is a hollow muscular organ made of strong cardiac muscles. Heart can push the blood through the circulatory system with great force. In fact push of the heart is the major force that causes circulation of blood throughout human body. Heart is made up of three layers; Pericardium, Myocardium and Endocardium.
BLOOD VESSELS:Human beings have a closed type of circulatory system (visit my blog post: Difference between open and closed circulatory systems) in which blood does not come in direct contact with body tissues. Instead the blood flows in restricted pathways called blood vessels. Materials are exchanged between blood and body tissues through the walls of blood vessels. Thus blood vessels are pathways of blood flow in human body. There are three main types of blood vessels; Arteries, Capillaries and Veins. For more details on types of blood vessels, visit:”". BLOOD: Blood is a specialized tissue of body that exists in fluid form. It is one of the five basic types of tissues of human body. (Blog post:Basic tissue types of Human Body). Blood consists of two major portions: Blood cells and Plasma. Plasma is the watery portion of blood that makes it a fluid. 90% of blood plasma is water and remaining 10% are proteins, inclusions and waste products etc. Blood cells are of three main types: Red Blood Cells (RBCs), White Blood Cells (WBCs) and Platelets.
Introduction to Lymphatic System:
Lymphatic system is the drainage system of human body and is accessory to the venous system.

Lymphatic system is composed of the following important components.
LYMPH VESSELS:Lymph vessels are pathways for flow of lymph around the body. Lymph vessels begin as lymph capillaries that begin blindly in tissue spaces and lead to larger lymph vessels. Lymph vessels do not arise from avascular structures, brain, spinal

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