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Circulation through the body:
There are two different types of circulation
Pulmonary Circulation:
Right side of the heart pumps blood from the heart to the lungs
Systemic Circulation:
Oxygen-rich blood then flows into the left side of the heart and pumped to the rest of the body.
Responsible for getting oxygen and nutrients to the rest of the body
Three types of blood vessels--- Arteries, capillaries, and veins
Oxygen rich blood leaves the blood vessel called the Aorta which is the first of a series of blood vessels
Arteries:
Large vessels that carry blood from the heart to the tissues
Capillaries:
Smallest of blood vessels are capillaries.
They are only one cell thick, and most are so small that the blood cells must go in a single line.
Veins:
Once blood cells pass through the capillaries, they go through the veins to return to the heart
Actual carrier of the oxygen and nutrients
Disease:
Coronary heart disease
Caused by atherosclerosis which occurs when fatty material builds up in your arteries
As the coronary arteries fill up with fat, blood flow to the heart can slow and even stop
Sources:
-Biology Book
and
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0004449/
Circulatory system
Composed of:
The heart,
A series of blood vessels
The blood that flows through them
The blood vessels:
The heart:
Valves in the heart prevent any blood leaving the atria to enter back in.
Mostly a muscle,
located near the center of the chest.
There are two thin layers surrounding the myocardium
(thick layer of muscle)
Myocardium is what pumps blood through the body
Atrium: receives the blood
Ventricle: Pumps blood out
Two of each
All arteries carry oxygen-rich blood except pulmonary arteries
Real purpose of capillaries is to bring nutrients and oxygen to tissues, and then absorb carbon dioxide and waste products.
The blood: