Quiz on Respiration and Circulation

What is the primary function of the respiratory system?

• To transport nutrients

• To acquire oxygen and eliminate carbon dioxide

• To pump blood throughout the body

• To digest food

Which muscle is primarily responsible for inhalation?

• Abdominal muscles

• Diaphragm

• Pectoral muscles

• Intercostal muscles

What occurs during exhalation?

• The diaphragm relaxes and moves up

• The diaphragm contracts

• The chest cavity expands

• Air pressure inside the lungs decreases

Where does external respiration take place?

• In the capillaries

• In the heart

• In the alveoli

• In the mitochondria

What is internal respiration?

• Exchange of gases between lungs and blood

• Exchange of gases between blood and body cells

• Production of ATP from glucose

• Elimination of carbon dioxide from the body

What is the byproduct of cellular respiration?

• Oxygen

• Glucose

• Carbon dioxide

• Nitrogen

Which part of the brain controls the automatic process of breathing?

• Cerebellum

• Medulla oblongata

• Cerebrum

• Hypothalamus