Sistem pernafasan

What is the primary function of breathing?

• To absorb nutrients from food

• To exchange oxygen and carbon dioxide

• To regulate body temperature

• To produce sound

Why is it generally better to breathe through the nose than the mouth?

• The nose is smaller and filters air more efficiently

• The nose contains mucus and fine hairs that filter and regulate air

• The mouth is primarily for eating, not breathing

• Breathing through the mouth can cause a dry throat

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Which sequence correctly lists the path of air from the nose to the lungs?

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

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

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

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

What happens during the inhalation phase of chest breathing?

• The diaphragm contracts and flattens

• The intercostal muscles relax, and the ribs move down

• The intercostal muscles contract, and the ribs lift

• The lungs decrease in volume, pushing air out