Mass Transport

The Heart, arteries, veins, capillaries and tissue fluid.

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  • Created by: Kathryn
  • Created on: 05-06-10 13:35

Heart

(http://www.univie.ac.at/cga/courses/BE513/EKG/heartAnatomy.gif)

Vena Cava Aorta
Pulmonary Artery Pulmonary Vein

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Liver and Kidney

Liver

Hepatic Vein
Hepatic Artery

Kidney

Renal Vein
Renal Artery

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Artery

Carries blood away from the heart.

Narrow Lumen
Thick muscle - high pressure blood flow

Oxygenated blood

Elastic tissue allows streching during heart beat pulses.

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Vein

Carries blood to the heart.

Large Lumen
Little Muscle

Valves - prevent backflow of blood (low pressure)

Deoxygenated

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Capillaries

Wall is one cell thick.

Carries blood all over organs.

Wall are permeable to most molecules and the pressure is very high so materials are forced through the wall --> tissue fluid.

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Tissue Fluid

Flows around the tissues surrounding the capillaries, delivering glucose and oxygen to the cells.

Takes away CO2 and other metabolic waste products.

Excess tissue fluid returns to the blood via the lymphatiic system.

Tissue fluid forms because:Hydrostatic pressure in the capillaries forces liquid out.

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