Exam Qs - Ch 2 - Respiratory System

What is the structure labeled 'a' in the respiratory system diagram?

• Diaphragm

• Bronchioles

• Alveoli

• Trachea

During normal breathing, what happens to the diaphragm?

• It contracts and moves downwards during inspiration

• It relaxes and moves upwards during expiration

• It relaxes and moves upwards during inspiration

• It contracts and moves downwards during expiration

Which of the following is a breathing volume that increases during exercise?

• Minute Ventilation

• Residual Volume

• Vital Capacity

• Tidal Volume

What is the function of the intercostal muscles in normal breathing?

• They relax to reduce the chest cavity during expiration

• They contract to expand the chest cavity during expiration

• They relax to reduce the chest cavity during inspiration

• They contract to expand the chest cavity during inspiration

What is the definition of minute ventilation?

• The volume of air inhaled or exhaled per breath

• The volume of air inhaled or exhaled per minute

• The maximum volume of air exhaled after a full inhalation

• The volume of air left in the lungs after a full exhalation

During exercise, which breathing volume does not change?

• Minute Ventilation

• Vital Capacity

• Tidal Volume

• Residual Volume

What is the role of the structure labeled 'b' in the respiratory system diagram?

• Trachea

• Diaphragm

• Alveoli

• Bronchioles

What are two characteristics of alveoli that assist gaseous exchange?

• Moist walls and small surface area

• Thick walls and small surface area

• Moist walls and large surface area

• Dry walls and small surface area

What is the maximum volume of air that can be exhaled after a full inhalation?

• Tidal Volume

• Vital Capacity

• Residual Volume

• Minute Ventilation

What is the change in minute ventilation during exercise?

• It decreases

• It remains the same

• It fluctuates

• It increases