Blood and the Circulatory System Quiz
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5 questions, one answer each
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1. Which chamber of the heart pumps blood to the lungs?
- A. Left atrium
- B. Left ventricle
- C. Right atrium
- D. Right ventricle
2. Which blood vessel carries oxygenated blood away from the heart to the body?
- A. Vena cava
- B. Pulmonary artery
- C. Aorta
- D. Pulmonary vein
3. Why do capillaries have walls only one cell thick?
- A. To withstand high blood pressure
- B. To provide a short diffusion path for exchange of substances
- C. To store more blood
- D. To prevent backflow of blood
4. A patient's coronary arteries are found to be narrowed by fatty deposits, reducing blood flow to the heart muscle. Which two treatments are commonly used?
- A. Antibiotics and vaccination
- B. Stents and statins
- C. Insulin injections and dialysis
- D. Chemotherapy and radiotherapy
5. A scientist compares three treatments for severe heart failure: drug therapy, mechanical artificial hearts, and donor heart transplants. Which statement correctly evaluates a trade-off between two of these?
- A. Drug therapy always cures heart failure permanently with no side effects
- B. An artificial heart can act immediately but a donor transplant is limited by organ availability and risk of rejection
- C. Donor transplants have no risk of rejection because the heart is grown from the patient's own cells
- D. Mechanical devices never wear out or malfunction