Respiratory System Quiz

What is the primary function of the respiratory system?

• To pump blood through the body

• To supply oxygen to muscles and remove waste gases

• To store energy

• To transport nutrients to cells

Which of the following is the pathway air travels through the respiratory system?

• Nasal passages → Bronchioles → Alveoli

• Nasal passages → Pharynx → Larynx → Trachea → Bronchi → Alveoli

• Pharynx → Nasal passages → Trachea → Bronchi

• Mouth → Trachea → Larynx → Bronchi

Where does gaseous exchange occur in the respiratory system?

• Nasal passages

• Trachea

• Alveoli

• Bronchi

What is the role of the diaphragm during breathing?

• To trap dust and bacteria

• To move air in and out of the lungs

• To filter and moisten the air

• To assist in changing the shape of the chest during breathing

Which component of the respiratory system divides into smaller bronchioles?

• Alveoli

• Trachea

• Nasal passages

• Diaphragm

What happens when the diaphragm contracts?

• The chest moves downward

• The chest moves upwards and outwards

• The lungs collapse

• The diaphragm becomes dome-shaped

What is the purpose of the mucus membranes in the nasal passages?

• To warm and moisten the air

• To filter air using hair

• To trap dust particles

• All of the above

What is the term for the combination of oxygen and haemoglobin in the lungs?

• Deoxyhaemoglobin

• Oxyhaemoglobin

• Carbon haemoglobin

• Oxygenated blood

Which structure is responsible for producing the sound when air passes over it?

• Bronchi

• Alveoli

• Larynx

• Trachea

What happens during gaseous exchange in the alveoli?

• Oxygen is released into the air

• Oxygen is absorbed by the blood, and carbon dioxide is released into the alveoli

• Oxygen and carbon dioxide both move into the alveoli

• Oxygen is absorbed by the diaphragm