Respiratory and Circulatory System Quiz

Which organ is responsible for the exchange of oxygen and carbon dioxide in the body?

• heart

• stomach

• liver

• lungs

What is the main function of the respiratory system?

• Produce hormones

• Facilitate gas exchange

• Filter waste products

• Regulate body temperature

What is the process by which oxygen is transported from the lungs to the body's cells?

• Respiration

• Circulation

• Digestion

• Excretion

What is the name of the muscle that helps with breathing?

• gluteus maximus

• biceps

• diaphragm

• trapezius

What is the name of the small air sacs in the lungs where gas exchange occurs?

• trachea

• pleura

• bronchioles

• alveoli

What is the name of the large blood vessel that carries oxygenated blood away from the heart?

• artery

• capillary

• aorta

• vein

What is the name of the valve that separates the left atrium and left ventricle in the heart?

• pulmonary valve

• mitral valve

• tricuspid valve

• aortic valve

What is the name of the process by which the heart pumps blood throughout the body?

• respiration

• digestion

• excretion

• circulation

What is the name of the liquid part of the blood?

• serum

• plasma

• hemoglobin

• platelets

What is the name of the condition where the arteries become narrowed and hardened?

• thrombosis

• atherosclerosis

• arteriosclerosis

• embolism