Respiration and Breathing Quiz

What happens during inhalation in the respiratory system?

• Carbon dioxide is brought into the lungs.

• Oxygen is expelled from the body.

• Oxygen is brought into the lungs.

• Carbon dioxide is absorbed by the blood.

What occurs during exhalation in the respiratory system?

• Oxygen is absorbed by the blood.

• Carbon dioxide is expelled from the body.

• Oxygen is expelled from the body.

• Carbon dioxide is brought into the lungs.

Where does air enter the body?

• Through the skin

• Through the nose and mouth

• Through the ears

• Through the eyes

What happens to the air as it enters the body?

• It is cooled and dried

• It is warmed and moistened

• It is filtered and frozen

• It is compressed and expanded

What is the primary function of the trachea?

• To filter blood

• To direct air to the bronchi

• To digest food

• To pump oxygen into the bloodstream

What is the function of the bronchi and bronchioles in the respiratory system?

• They filter blood.

• They produce oxygen.

• They distribute air to both lungs.

• They digest food.

What are alveoli?

• Tiny air sacs where gas exchange occurs.

• Large muscles that help in breathing.

• Tubes that carry air to the lungs.

• Cells that produce mucus in the respiratory tract.

What surrounds the alveoli to facilitate gas exchange?

• Capillaries

• Nerves

• Muscles

• Bones

What is the primary function of the diaphragm in the human body?

• It helps with digestion.

• It helps with breathing by expanding and contracting the lungs.

• It circulates blood throughout the body.

• It filters toxins from the blood.

What does external respiration refer to?

• Exchange of gases between the air in the lungs and the blood

• Exchange of nutrients between the stomach and the intestines

• Exchange of gases between the skin and the environment

• Exchange of fluids between the cells and the blood