SBI3U - The Circulatory System Introduction and Human Circulatory System.
Components of the circulatory system
Transcript of Components of the circulatory system
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S. MORRIS 2006
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Components of the circulatory system
The circulatory system has three components:
1. vessels(arteries, capillaries ,veins and
lymphatics )
2. pump (heart)
3. fluid(blood , lymph or hemolymph )
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Functions of bloodIn the mammals
1. To carry partially digested food material from thesmall intestine and oxygen from the lungs to thecells.
2.To transport the waste products of metabolism from the cells to the kidneys, lungs, and skin for elimination from the body.
3.To carry hormones from the endocrine glands to the cells they control.
4. To control the amount of water and the level of acidity inside the cells.
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5. To provide antibodies and white cells that protects
the body against infection.
6. To provide substances that will clot blood if blood
vessels are damaged.
7. To carry enzymes throughout the body.
8. To distribute heat produced during cell
metabolism.
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Plasma
A straw-coloured liquid that carries the cells and the platelets which help blood clot.
• carbon dioxide
• glucose
• amino acids
• proteins
• minerals
• vitamins
• hormones
• waste materials
like urea.
It also contains useful things like;
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Open and Closed Circulatory System
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Vein
Insects, arthropods, mollusks Earthworms, squids, octopuses, vertebrates
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Single and Double Circulation
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Blood Vessels
The heart the blood
The vessels the blood (to &from all the cells of
the body )
Three kinds of vessels
(1 )Arteries
(2 ) Veins
(3 ) Capillaries
pumps
carry
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Arteries are made up of
1. Tunica intima (innermost )
2. Tunica media
3. Tunica adventitia
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Artery and Vein
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Vein
Artery
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Three types of Capillaries
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Fetal Circulation
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Coronary circulation
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Hepatic portal Circulation
Inferior venacava
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Internal structure of mammalian heart
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Working of the heart
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The Lymphatic System
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Exchange of materials between blood & body tissues
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Lymphatic System
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You