Open vs. Closed Circulatory System

1
Open vs. Closed Circulatory System

• Advanced Biology 11
• Ms. Lowrie

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Open Circulatory System

• Have heart
• May have some blood vessels
• Not always connected
• Blood carrying oxygen/nutrients pumped into
  body cavities
• Surrounds cells

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Open Circulatory System

• Examples
• Snails
• Grasshoppers
• Lobsters
• Insects

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Closed Circulatory System

• Have blood vessels
• Blood always in heart or vessels
• Larger vessels branch into smaller vessels
• Blood supplied to all body tissues

5
Closed Circulatory System

• Examples
• Earthworms
• Fish
• Humans
• Monkeys

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Lets Correct!

• 1-3 , 5 pg 243