1. Which vessel has valves?
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Other questions in this quiz
2. What is one reason why diffusion may be inadequate for some organisms to receive oxygen and get rid of waste substances?
- The organism's surface is thin
- The organism has a high surface area to volume ratio
- The organism is too large
- The organism is unicellular
3. In which stage of the cardiac cycle does the heart relax?
- Ventricular Systole
- Atrial Systole
4. Which vessel takes blood from the left side of the heart to the body?
- Vena Cava
- Pulmonary Vein
5. Which vessel has a narrow lumen?