Respiratory System

What is the main function of the respiratory system?

• To provide oxygen and remove carbon dioxide from the body.

• To circulate blood throughout the body.

• To digest food and absorb nutrients.

• To regulate body temperature and maintain homeostasis.

The 'windpipe' is also called the...

• Bronchus

• Trachea

• Esophagus

• Larynx

What are bronchi?

• The small air sacs in the lungs where gas exchange occurs.

• The large tubes that branch from the trachea and lead to the lungs.

• The muscles that control breathing in and out.

• The protective lining of the respiratory tract.

What gas do we exhale?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is the role of cilia in the respiratory system?

• To trap and move particles out of the airways.

• To facilitate gas exchange in the alveoli.

• To produce mucus for the respiratory tract.

• To regulate airflow in the lungs.

When you breathe, your lungs take in ___ and remove ___?

• Oxygen / Carbon dioxide

• Nitrogen / Oxygen

• Carbon monoxide / Oxygen

• Hydrogen / Methane

What are alveoli?

• Tiny air sacs in the lungs where gas exchange occurs.

• Large blood vessels that carry oxygenated blood.

• Muscles that help in the expansion of the lungs.

• Cells that produce mucus in the respiratory system.

What gas do we inhale?

• Nitrogen

• Carbon Dioxide

• Oxygen

• Hydrogen

What are the main organs of gas exchange in the respiratory system?

• Heart

• Lungs

• Kidneys

• Liver

What happens during exhalation?

• The diaphragm contracts, and air is drawn into the lungs.

• The diaphragm relaxes, and air is pushed out of the lungs.

• The rib cage expands, allowing more air to enter.

• The lungs fill with air, increasing pressure in the chest cavity.