CAX IGCSE Biology ventilation

Which of the following nutrients supply the MOST energy ?

• glucose

• starch

• proteins

• lipids

When you breathe the diaphragm _______    ____ creating more space for more air.

• raises high
• raises low
• lifts high
• flattens out

What is the main function of the respiratory system?

• To break food down
• Circulate the blood
• Supply the blood with oxygen

What is the name of the tiny air sacs in your lungs?

• Bronchioles
• Ravioli
• Alveoli
• Bronchus

When you breathe in air, you bring oxygen gases into your lungs and blow out ________ gases.

• Carbon dioxide
• Carbon monoxide
• Oxygen
• Hydrogen

The respiratory system is made up of the trachea, the lungs, and the ___________. 

• Liver
• Diaphragm
• Esophagus
• Pancreas

When you inhale, your lungs:

• Expand
• Turn purple
• Smaller
• Do a dance

Which term describes the physical movements in the thorax which bring fresh air to the alveoli and remove stale air?

• gas exchange

• respiration

• ventilation

• circulation

Which of the following is/are processes of all living organisms?

• ventilation

• homeostasis

• metabolism

• respiration

Which of the following is/are true for inhalation?

• internal intercostal muscles contract

• ribcage moves up and out

• volume in the thorax decreases

• air enters when pressure in the thorax is below atmospheric pressure