Respiratory and Circulatory System

Which of the following statements is not a function of the lungs?

• keeps oxygen in the body cells

• keeps carbon dioxide in the body cells

• exchanges oxygen and carbon dioxide between the body cells

• exchanges gases between the body cells and external environment

Which is the correct pathway of oxygen?

• nostril - pharynx - larynx - trachea - bronchi - bronchioles - alveoli

• nostril - larynx - pharynx - trachea - bronchioles - bronchi - alveoli

• nostril - pharynx - larynx - trachea - bronchi - bronchioles - alveoli

• nostril - trachea - larynx - pharynx - bronchi - bronchioles - alveoli

What happens when we inhale?

• the diaphragm relaxes, the volume of the lungs increases

• the diaphragm relaxes, the volume of the lungs decreases

• the diaphragm contracts, the volume of the lungs increases

• the diaphragm contracts, the volume of the lungs decreases

Which of the following parts is responsible for gas exchange?

• alveoli

• bronchioles

• larynx

• nasal cavity

The following statements give the functions of the lungs, except

• the lungs add oxygen to the blood

• the lungs contract or relax during breathing

• the lungs remove carbon dioxide from the body

• the lungs control the respiratory system that helps make breathing possible

Which statement does not give the function of the circulatory system?

• circulates blood

• controls the functions of the heart

• transports nutrients, gases and hormones

• defends the body against pathogenic organisms

Which of the following is not part of the circulatory system?

• blood

• blood vessels

• heart

• lungs

What type of blood is being carried in the systemic circuit?

• oxygenated blood only

• deoxygenated blood only

• both oxygenated and deoxygenated blood

• neither oxygenated nor deoxygenated blood

Which blood vessels carry oxygen-poor blood?

• arteries

• arterioles

• capillaries

• veins

Which of the following pathway of blood flow is correct?

• right atrium - right ventricle - pulmonary artery - lungs - pulmonary veins - left atrium - left ventricle - aorta

• right atrium - pulmonary artery - right ventricle - lungs - pulmonary veins - left atrium - left ventricle - aorta

• right ventricle - pulmonary artery - right atrium - lungs - pulmonary veins - left atrium - left ventricle – aorta

• right ventricle - right atrium - lungs - pulmonary veins - pulmonary artery left atrium - left ventricle - aorta