The major components of the cardio vascular system are the lovingness, telephone circuit and product line vessels.
Occupying a post just leftfield of centre in the chest in the thoracic pitfall (mediastium) sits the heart the most powerful muscle in the ashes .This is the central part of the cardiovascular system (cardio=heart, vascular blood vessels) and is solely responsible for the movement of all blood roughly the cardiovascular system, this is massive job and the heart is estimated to pump at least 7000 litres a day (or 30 times its accept weight a minute)1However these figures are on the assumption that the carcass is at rest, since much of the time the body will non be at rest then these figures can be increased dramatically.
The human vascular system contains upwards of 100,000 km of blood vessels the blood is pumped through this closed system of arteries, veins, and capillaries carrying with it nutrients, oxygen trace elements and ions. as the blood flows the o2 and nutrients leave the blood via diffusion into interstitial fluid and onwards into cells to fuel the necessity events needed for life 2.
Simultaneously co2 and other bumble products including heat are taken into the blood and removed via the lungs kidneys trim etc.
The actual dimensions of the heart are quite astounding considering the unmistakable size of the work involved. Weighing about 300g in a adult and taking up as much space as a closed fist it is 3 no means one of the bodies largest organs.
Aproximatley 12cm long and 6cm at its widest point the heart has a pointed end that tilts to the left hip this
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The structure consists of 4 chambers the right atrium right ventricle left atrium and left ventricleIf you want to get a full essay, order it on our website: Orderessay
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