Arrows indicate that lymph is formed when lymphatic capillaries take up excess tissue fluid. Lymphatic capillaries lie near blood capillaries.
Sylvia S. Mader, Inquiry into Life, 8th ed. Copyright © 1997 McGraw-Hill, Inc.
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| External Heart Anatomy |
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| Coronary Arteries and Veins |
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| Internal Heart Anatomy |
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| Internal Heart Anatomy |
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| Overview of Cardiovascular System |
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| Hemoglobin Molecule |
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| Lymphatic Vessels Arrows indicate that lymph is formed when lymphatic capillaries take up excess tissue fluid. Lymphatic capillaries lie near blood capillaries. Sylvia S. Mader, Inquiry into Life, 8th ed. Copyright © 1997 McGraw-Hill, Inc. |
| Transmission of electrical impulses through the heart. Windows (2398 K) - Requires Quicktime Player Macintosh (2402 K) - Requires Quicktime Player Startup Instructions |
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| Cardiac Cycle |
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| Electrocardiogram |
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| Heart Electrical Activity |
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| Frog ECG Trace |
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| Comparison of Frog and Human Hearts |
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| Comparison of Cardiac and Skeletal Muscles |