Lung Function and Exercise Quiz

The right lung is divided into how many lobes?

• 2

• 3

• 4

• 5

The functional unit of the lungs where gas exchange occurs is the:

• Bronchioles

• Alveoli

• Pleura

• Trachea

Which muscle is the primary driver of inspiration during quiet breathing?

• Intercostal muscles

• Diaphragm

• Sternocleidomastoid

• Abdominal muscles

During intense exercise, which parameter increases most significantly to enhance oxygen delivery?

• Residual volume

• Vital capacity

• Minute ventilation

• Functional residual capacity

In terms of performance, an athlete with higher VO₂ max has:

• Reduced lung volumes

• Higher capacity for aerobic work

• Lower efficiency in oxygen transport

• Increased anaerobic metabolism

During high-intensity interval training (HIIT), the rapid breathing mainly helps in:

• Increasing residual volume

• Reducing alveolar dead space

• Removing excess CO₂

• Increasing surfactant secretion

The respiratory adaptation most beneficial for endurance athletes is:

• Increased alveolar dead space

• Increased diffusion capacity of lungs

• Increased residual volume

• Reduced vital capacity

Which training method helps improve ventilatory muscle endurance?

• Inspiratory muscle training (IMT)

• Resistance training of diaphragm

• Sprint interval training only

• Balance training

Normal breathing at rest is called:

• Hyperventilation

• Apnea

• Tidal breathing

• Dyspnea

Exercise-induced bronchoconstriction is most common in:

• Strength athletes

• Powerlifters

• Endurance athletes (e.g., swimmers, runners)

• Bodybuilders