sistem pernapasan

What is the primary function of breathing?

• Inhaling oxygen and exhaling carbon dioxide

• Inhaling carbon dioxide and exhaling oxygen

• Inhaling nitrogen and exhaling oxygen

• Inhaling water vapor and exhaling oxygen

Which of the following is the correct order of air passage through the main respiratory organs after entering the body?

• Nose -> Larynx -> Trachea -> Bronchus -> Alveolus

• Nose -> Trachea -> Larynx -> Bronchus -> Alveolus

• Nose -> Bronchus -> Trachea -> Larynx -> Alveolus

• Nose -> Alveolus -> Bronchus -> Trachea -> Larynx

Why is breathing through the nose considered more beneficial than breathing through the mouth?

• The nose allows for faster air intake.

• The nose filters dust, dirt, and germs from the air.

• The nose has a larger opening than the mouth.

• The nose is directly connected to the stomach.

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What happens during the inhalation phase of chest respiration?

• The intercostal muscles relax, and the ribs move downwards.

• The diaphragm contracts and flattens.

• The intercostal muscles contract, and the ribs move upwards.

• The chest cavity and lungs decrease in size.