Cardiovascular-SubCategory
The Cardiovascular system means the system of heart and blood vessels of human
body. The term “cardiovascular” is a combination of two word; “Cardio” and
“vascular”. The term “cardio” is derived from “cardiac” meaning Heart and
the term “vascular” means blood vessels. So the name itself indicates that
cardiovascular systems is the system of heart and blood vessels. Cardiovascular
system is also known as “Circulatory System”.
The Cardiovascular system is made up of three major components; Heart, Blood vessels
and blood.
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. For more details on human
heart, visit “”
BLOOD VESSELS:Human beings have a closed type of circulatory system 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.