RESPIRATORY and CIRCULATORY SYSTEM REVIEW

1. This system allows filtration, humidification, and warming of air as it enters the body.

Answer explanation

Respiratory System

2. The atrium that receives an oxygenated blood coming from the lungs.

Answer explanation

left atrium

3. It is the main organ of the respiratory system.

Answer explanation

lungs

4. Part of the lower respiratory tract where gas exchange occurs.

Answer explanation

alveoli

5. The blood vessel that sends deoxygenated blood to the lungs for oxygenation.

Answer explanation

pulmonary artery

6. This organ protects the respiratory system from accumulation of foreign materials.

Answer explanation

trachea

7. This organ of the respiratory system serves as the pathway for both air and food.

Answer explanation

pharynx

8. The type of gas that humans and most animals exhale.

Answer explanation

carbon dioxide

9. This is the largest artery that sends oxygenated blood to the different parts.

Answer explanation

aorta

10. This organ is the main entrance of air and the exit point for carbon dioxide.

Answer explanation

nose