The Circulatory system is an organ system that transports things around the body that are needed by cells. For example: Nutrients, such as: Oxygen, Food and Water.
When Blood circulates around the body, it leaves the left ventricle of the Heart and travels to the Aorta (The largest artery in the Human body). The blood that leaves the Aorta is rich of oxygen then travels around the body in arteries, and to the organs. When the deoxygenated blood travels back to the lungs through a system of Veins, As it reaches the lungs, the carbon dioxide (a waste product) is removed from the blood and replaced with fresh oxygen that is inhaled through the lungs.
The Body is made up of vessels and muscle to help control the flow of blood around the body. This is called circulation; the main parts of the circulatory system consist of the Heart, Blood, Arteries, Veins and Capillaries.
(Author: Unknown, Year 2000, Title: The Circulatory system, http://library.thinkquest.org/5777/cir1.htm Date visited: 27/05/09)
• The Heart- A pump to circulate and push the blood around the body.
• Blood- A fluid in which Red Blood Cells, White Blood Cells and platelets are suspended (That carry’s the blood).
• Arteries- Arteries transport the oxygenated blood for Cellular Respiration.
• Veins- Veins carry the deoxygenated blood back to the lungs for fresh oxygen, and then to be re-used.
• Capillary-Capillaries are the smallest blood vessels in the human body, which enable the interchange of: Oxygen and Carbon dioxide.
(Author: Unknown, Year: 1996, Title: The Circulatory system, http://www.fi.edu/learn/heart/systems/circulation.html Date visited: 29/05/09)
The blood carry’s essential nutrients to the cells so that respiration can occur.
The Respiratory system is to allow gas exchange. The primary function of the respiratory systems is to supply blood with oxygen and provide the whole body with oxygenated blood. The respiratory system does this through
References: Author: Dr James Wright, Year: 1987,Title: The Family Reference Book, Publisher: Child and Henry Publishing Pty Ltd, Place published: Unknown. Author: Unknown, Year: 1996, Title: The Respiratory system, http://www.fi.edu/learn/heart/systems/respiration.html, Date visited: 28/05/09 Author: Unknown, Year: 1996, Title: The Circulatory system, http://www.fi.edu/learn/heart/systems/circulation.html Date visited: 29/05/09 Author: Unknown, Year 2009 (Edited), Title: The Respiratory system, http://en.wikipedia.org/wiki/Respiratory_system Date visited: 29/05/09 Author: Unknown, Year 2000, Title: The Circulatory system, http://library.thinkquest.org/5777/cir1.htm Date visited: 27/05/09