Cardiovascular System

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Cardiovascular System
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Vocabulary 324

• 1. brady-
• 2. diastol-
• 3. systol-
• 4. tachy-
• 5. ventr-
• 6. embol-

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Functions/Parts

• 1. Exchange particles through blood flow
• A. Nutrients and/or electrolytes
• B. Gases
• C. Waste Products

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Functions/Parts

• 2. Pulmonary Circuit

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• 3. Systemic Circuit

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Vessels

• CLOSED CIRCUIT!!!

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Pathway

• H?A?a?c?v?V?H

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Arteries and Arterioles

• A. Strong, elastic vessels made of
• Endothelium
• Smooth Muscle

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• B. Smooth muscle contraction
• Stimulus to the muscle can make two things happen.

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• 1. Vasoconstriction
• Muscles Contract
• Vessel Diameter decreases

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• 2. Vasodilation
• Muscles Relax
• Vessel Diameter increases

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Capillaries
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Capillaries

• Smallest diameter blood vessels, made up of
  simple squamos endothelium

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Pulmonary Systemic
Diffuses out ? ?
Diffuses into ? ?
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Pulmonary Systemic
Diffuses out CO2 O2 Nutrients
Diffuses into O2 CO2, Waste Pro.
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Veins and Venules

• Return blood from capillaries to the atria (heart)

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Veins and Venules

• A. Thinner walls with less developed muscle

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Veins and Venules

• B. VALVES
• One-way
• Prevent back flow

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