1. What type of organism has an open circulatory system?
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Other questions in this quiz
2. Which valve occurs first in the cardiac cycle?
- Atrioventricular valves
- Semi-lunar valves
3. What is the name of the graph that records the electrical activity of the heart?
4. What type of circulatory system does a fish have?
- Double and closed
- Single and closed
- Single and open
- Double and open
5. Which vessel has a larger lumen?