The net movement of particles from a high concentration to a low concentration down a concentration gradient.
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Mass Transport System
The collective name for the circulatory systems of multicellular organisms that are to large to use diffusion.
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Mass Flow
All the particles in a liquid move in one direction through tubes due to difference in pressure.
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Arteries
The tubes that carry oxygenated blood to the muscles in the body (exept the heart, where they take the deoxygenated blood away from the heart)
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Arterioles
Smaller arteries
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Capillaries
Even smaller than arterioles, they are one cell thick therfore substances can diffuse out of them into muscules or organs. The same is true for waste products that need to come out.
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Venules
The deoxygentated blood goes into the venules from the capillaries. Venules are smaller veins.
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Veins
They take the deoxygented blood back to the lungs to pick up more oxygen. Exept from the pulmonary vein that takes the oxygenated blood into the heart.
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Open Circulatory System
Mainly in Insects and small animals, Blood circulates in large open spaces. The heart pumps blood into cavities surrounding the vital organs. Its drawn out of the cavity by the small valved openings along its length.
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Closed Circulatory System
Many animals (including all vertibrates), their blood is enclosed in tubes meaningn there is higher pressure. This is a better way of delivering substances as there is a higher pressure which means the blood travels faster.
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Single Circulatory System
Closed Circulatory System, The blood pumps through the heart once on a complete circuit.
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Double Circulatory System
Closed Circulatory System, The blood pumps through the heart twice on a complete circuit.
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Polar Molecule
A molecule that has an uneven distrubution of charge
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Dipole
A molecule with two opposingly charged ends
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Hydrogen Bonding
The slightly positively charged end of a water molecule is attracted to the slightly negative ends of surrounding water molecules.
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Hydrophillic
Water loving
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Hydrophobic
Watr hating
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Collagen
A tough fibrous protein. strong and durable. In the walls of arteries and veins (more in arteries than veins)
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Atrial Systole
Contraction of the atrium
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Ventricular Systole
Contraction of the ventricle
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Diastole
Relaxation of the heart
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Cardiac Cycle
One complete sequence of filling and and pumping blood.
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Other cards in this set
Card 2
Front
The net movement of particles from a high concentration to a low concentration down a concentration gradient.
Back
Diffusion
Card 3
Front
The collective name for the circulatory systems of multicellular organisms that are to large to use diffusion.
Back
Card 4
Front
All the particles in a liquid move in one direction through tubes due to difference in pressure.
Back
Card 5
Front
The tubes that carry oxygenated blood to the muscles in the body (exept the heart, where they take the deoxygenated blood away from the heart)
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