Respiratory, Circulatory, and Excretory Systems Review Quiz

Where does gas exchange in the lungs primarily occur?

• In the trachea

• In the bronchi

• In the alveoli

• In the bronchioles

What is the main function of the circulatory system?

• To transport nutrients to cells

• To remove waste products from the body

• To transport oxygen and nutrients to cells and remove waste products

• To produce blood cells

How is oxygen transported in the blood?

• Dissolved in plasma

• Attached to red blood cells

• Within white blood cells

• Through the platelets

Which of the following is NOT an organ of the excretory system?

• Kidney

• Liver

• Heart

• Bladder

What is the primary waste product removed from the blood by the kidneys?

• Carbon dioxide

• Urea

• Oxygen

• Glucose

Which part of the circulatory system is responsible for carrying oxygen-rich blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

What is the role of the alveoli in the respiratory system?

• To warm and moisten the air

• To filter out dust and pathogens

• To facilitate the exchange of oxygen and carbon dioxide

• To produce mucus

Which component of the blood is primarily responsible for transporting oxygen?

• Plasma

• White blood cells

• Red blood cells

• Platelets

How does the excretory system help maintain homeostasis in the body?

• By regulating body temperature

• By controlling blood pressure

• By removing waste products and excess substances

• By producing hormones

What is the function of the capillaries in the circulatory system?

• To pump blood

• To carry blood away from the heart

• To facilitate the exchange of materials between the blood and tissues

• To return blood to the heart