Respiratory physiology Quiz

What is the function of alveoli in the respiratory system?

• Transport oxygen in the blood

• Exchange gases between air and blood

• Filter dust and particles

• Produce mucus

What is the correct order of structures that air passes through from the nose to the alveoli?

• Nose, Nasal chambers, Nasopharynx, Larynx, Trachea, Bronchi, Lungs, Bronchioles, Terminal bronchioles, Alveolar ducts, Alveoli

• Nose, Nasopharynx, Nasal chambers, Larynx, Trachea, Bronchi, Lungs, Bronchioles, Terminal bronchioles, Alveolar ducts, Alveoli

• Nose, Nasal chambers, Larynx, Nasopharynx, Trachea, Bronchi, Lungs, Bronchioles, Terminal bronchioles, Alveolar ducts, Alveoli

• Nose, Nasal chambers, Nasopharynx, Larynx, Trachea, Bronchi, Lungs, Terminal bronchioles, Bronchioles, Alveolar ducts, Alveoli

What type of blood enters the lungs with a high carbon dioxide content?

• Oxygenated blood

• Deoxygenated blood

• Arterial blood

• Venous blood

What is the term for parts of the respiratory system not involved in gaseous exchange?

• Respiratory zone

• Conducting zone

• Anatomical dead space

• Alveolar space

What happens to the diaphragm when it contracts?

• It expands and decreases the space in the thoracic cavity

• It flattens and increases the space in the thoracic cavity

• It remains unchanged

• It becomes more dome-shaped

What is the function of the external intercostal muscles during contraction?

• They lift the ribs downwards and inwards.

• They lift the ribs upwards and outwards.

• They decrease the space in the thoracic cavity.

• They do not affect the ribs.

Where are the internal intercostal muscles located in relation to the external intercostals?

• Above the external intercostals

• Deeper than the external intercostals

• In front of the external intercostals

• Behind the external intercostals

What is the primary function of the internal intercostal muscles during forced respiration?

• To relax and allow air into the lungs

• To contract with the abdominal muscles to force air out of the lungs

• To expand the rib cage

• To stabilize the diaphragm

What happens to the lungs during inspiration?

• The lungs expand and move upwards

• The lungs contract, becoming flatter and moving caudally

• The lungs remain unchanged

• The lungs deflate and move inwards

What causes air to be drawn into the lungs during inspiration?

• Positive pressure in the thoracic cavity

• Negative pressure in the pleural space

• Contraction of the diaphragm

• Relaxation of the intercostal muscles