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- 1. Multiple Choice
Which are the organs of the respiratory system?
A. Lungs, heart, and blood.
B. Rib cage, diaphragm, and lungs.
C. Nose, lungs, heart, and diaphragm
D. Lungs, throat, and passageways that lead to the lungs
- 2. Multiple Choice
What happens in the diaphragm when we exhale (breath out)?
A. The diaphragm relaxes and moves upwards.
B. The diaphragm contracts and moves upwards.
C. The diaphragm relaxes and moves downwards.
D. The diaphragm contracts and moves downwards.
- 3. Multiple Choice
What will happen if the epiglottis does not close the entrance of the airways?
A. The larynx will be blocked with food particles.
B. The pharynx will have difficulty swallowing.
C. The food particles will block the opening of the trachea and a person will have difficulty in breathing.
D. The food particles will block the bronchioles thus making it difficult to breathe in and breathe out.
- 4. Multiple Choice
What important activity takes place in the lungs?
A. Food is digested.
B. Liquid waste is filtered from the blood.
C. The trachea is exchanged for the larynx.
D. Oxygen is exchanged for carbon dioxide.
- 5. Multiple Choice
Which is taking place in this figure?
A. Exhalation; the rib cage is expanding.
B. Exhalation; the diaphragm is relaxing.
C. Inhalation; the chest cavity is reduced.
D. Inhalation; the diaphragm is contracting.
- 6. Multiple Choice
Which statement is true about the human circulatory system?
A. It makes blood cells.
B. It transports oxygen and nutrients.
C. It breaks down food and releases nutrients.
D. It is the first line of defense against bacteria.
- 7. Multiple Choice
Which blood vessel carries blood back to the heart?
A. Artery
B. Blood vessel
C. Capillary
D. Vein
- 8. Multiple Choice
Which is NOT a function of the circulatory system?
A. Deliver oxygen and nutrients to cells.
B. Break down carbohydrates into glucose.
C. Transport other materials through the body.
D. Remove carbon dioxide and wastes from cells.
- 9. Multiple Choice
If a rupture occurs in the pulmonary artery, which passageway is affected?
A. The passageway of blood going to the aorta.
B. The passageway of blood going to the lungs.
C. The passageway of blood going to the vena cava.
D. The passageway of blood going to the right atrium.
- 10. Multiple Choice
Which path in the figure does the blood follow through the heart as it returns from the head and body?
A. 1→2
B. 2→1
C. 3→4
D. 4→3
- 11. Multiple Choice
In which chamber does the blood flow while transporting fresh oxygen?
A. 1
B. 2
C. 3
D. 4
- 12. Multiple Choice
What type of circulation carries oxygenated blood to the body?
A. Bodily Circulation
B. Coronary Circulation
C. Pulmonary Circulation
D. Systemic Circulation
- 13. Multiple Choice
In order for the body to maintain homeostasis, the intake of oxygen into the lungs must be followed by which process?
A. A decrease in blood flow.
B. A decrease in gas exchange.
C. An increase in blood pressure.
D. The exhalation of carbon dioxide.
- 14. Multiple Choice
How do the respiratory and circulatory systems work together?
A. They supply the body's cells with oxygen.
B. They are responsible for the movement of the body.
C. They break down food into energy and eliminate waste.
D. They send chemical signals throughout the body via hormones.
- 15. Multiple Choice
The circulatory and respiratory systems work together to provide cells with oxygen and nutrients and remove wastes such as carbon dioxide. When the body needs more oxygen, how does the circulatory system respond?
A. The heart beats faster to match the increase in breathing rate.
B. More blood is sent to the lungs and less to the rest of the body.
C. The blood vessels in the arms and legs constrict to conserve oxygen.
D. Blood moves more slowly through the organs to carry away more wastes.
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