Respiratory System Quiz

What is the function of the human respiratory system?

• Regulation of body temperature

• Exchange of gases

• Digestion of food

• Transport of nutrients

What is the byproduct produced in aerobic cellular respiration?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

What is the function of the nasal cavity in the respiratory system?

• Detecting odors

• Producing saliva

• Digesting food

• Warming, humidifying, and filtering air

Which structure prevents food from going down the trachea?

• Epiglottis

• Pharynx

• Trachea

• Larynx

How many lobes does the right lung have?

• Two

• Three

• Five

• Four

What is the function of alveolar sacs in the respiratory system?

• Gas exchange

• Hormone production

• Digestion

• Blood circulation

Which body system includes the ribs that protect the lungs?

• Skeletal system

• Muscular system

• Nervous system

• Endocrine system

What is the role of intercostal muscles in respiration?

• Regulating pH levels

• Producing surfactant

• Pumping blood to the lungs

• Expanding and contracting the thoracic cavity

What regulates the involuntary control of breathing?

• Immune system

• Endocrine system

• Nervous system

• Circulatory system

What is the function of surfactant in the alveoli?

• Regulating blood pH

• Producing ATP

• Increasing gas exchange

• Lowering surface tension