Respiratory System 2

What is the function of the nasopharynx in the respiratory system?

• It produces sound.

• It connects the nostrils to the pharynx and warms the air as it enters.

• It traps foreign particles.

• It expands the lungs during inhalation.

Which structure in the respiratory system is lined with hair and mucus to trap particles from the air?

• Oral cavity

• Intercostal muscles

• Nares

• Pleural membrane

What is the primary role of the trachea?

• It is the site where gas exchange occurs.

• It helps in the production of sound.

• It is the main tube for respiration.

• It contracts to expand the lungs.

What is the function of the intercostal muscles?

• They protect the heart and lungs.

• They produce sound.

• They lift and lower the ribcage during breathing.

• They separate the pleural membranes.

What is the purpose of the pleural membranes?

• They line the oral cavity.

• They produce mucus.

• They facilitate the expansion and contraction of the lungs without friction.

• They trap particles in the air.

How do the ribs contribute to the respiratory system?

• They produce sound.

• They warm the air as it enters the respiratory system.

• They trap and remove particles from the air.

• They provide physical protection to the heart and lungs and are involved in the breathing process.

What is the function of the epiglottis?

• It helps in the gas exchange process.

• It vibrates during phonation to create sound.

• It closes on top of the trachea during swallowing to prevent liquids and food from going into the respiratory tract.

• It separates the thoracic cavity from the abdominal cavity.

What is the main muscle of respiration?

• Pharynx

• Bronchioles

• Diaphragm

• Glottis

What does the pulmonary venule carry?

• Oxygenated blood away from the alveoli and towards the heart.

• Deoxygenated blood away from the alveoli and towards the heart.

• Oxygenated blood towards the alveoli and away from the heart.

• Deoxygenated blood towards the alveoli and away from the heart.

What is the function of the alveolar sac in the respiratory system?

• It pumps blood from the right ventricle of the heart to the alveolus.

• It decreases the surface tension on the inner surface of the lungs.

• It provides the functional surface for gas exchange.

• It carries deoxygenated blood away from the heart.