Respiratory and Circulatory System Quiz

What is the primary function of the respiratory system?

• Pumping blood

• Gas exchange

• Digestion

• Hormone regulation

Which part of the respiratory system is responsible for filtering, warming, and humidifying the air we breathe?

• Bronchi

• Trachea

• Nasal cavity

• Alveoli

Which gas is primarily exchanged in the alveoli of the lungs?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What structure prevents food from entering the trachea during swallowing?

• Epiglottis

• Pharynx

• Larynx

• Bronchi

What is the main function of red blood cells in the circulatory system?

• Fight infections

• Clot blood

• Carry oxygen

• Produce hormones

Which blood vessel carries oxygenated blood away from the heart?

• Veins

• Capillaries

• Aorta

• Pulmonary artery

What is the role of the heart's valves?

• Pump blood

• Prevent backflow of blood

• Produce red blood cells

• Filter waste products

Which condition is characterized by the inflammation of the bronchial tubes?

• Asthma

• Bronchitis

• Emphysema

• Pneumonia

Which part of the heart receives deoxygenated blood from the body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the primary role of platelets in the circulatory system?

• Carry oxygen

• Help in clotting blood

• Fight infections

• Transport nutrients