Pulmonary changes during exercise




Pulmonary changes during exercise

Respiratory system

Anatomy and physiology

Respiratory system anatomy and physiology

Reading a chest X-ray

Lung volumes and capacities

Lung volumes and capacities

Anatomic and physiologic dead space

Breathing mechanics

Alveolar surface tension and surfactant

Compliance of lungs and chest wall

Combined pressure-volume curves for the lung and chest wall

Ventilation and perfusion


Zones of pulmonary blood flow

Regulation of pulmonary blood flow

Pulmonary shunts

Ventilation-perfusion ratios and V/Q mismatch

Airflow and gas exchange

Breathing cycle

Breathing cycle and regulation

Airflow, pressure, and resistance

Ideal (general) gas law

Boyle's law

Dalton's law

Henry's law

Graham's law

Fick's laws of diffusion

Gas exchange in the lungs, blood and tissues

Diffusion-limited and perfusion-limited gas exchange

Alveolar gas equation

Gas transport

Oxygen binding capacity and oxygen content

Oxygen-hemoglobin dissociation curve

Carbon dioxide transport in blood

Regulation of breathing

Breathing control

Pulmonary chemoreceptors and mechanoreceptors

Physiologic adaptations of the respiratory system

Pulmonary changes at high altitude and altitude sickness

Pulmonary changes during exercise


Pulmonary changes during exercise


0 / 8 complete

USMLE® Step 1 questions

0 / 1 complete

High Yield Notes

4 pages


Pulmonary changes during exercise

of complete


USMLE® Step 1 style questions USMLE

of complete

A researcher is studying the effects of exercise on a healthy human subject. The study participant is instructed to run on a treadmill, and various physiologic parameters will be studied. Which of the following physiologic parameters is most likely to be decreased in this subject several minutes after initiating exercise? 

External Links


During exercise, the body's demand for the oxygen needed in cellular respiration increases, and this requires the body to do some adjustments. The cardiac output and pulmonary blood flow increase, while the pulmonary vascular resistance decreases. The result is an increased space of the lung that is perfused, which decreases physiologic dead space and increases oxygen delivery to exercising tissues. Furthermore, due to an increase in acid production and temperature, the hemoglobin's affinity for oxygen decreases, which favors the delivery of oxygen to tissue in need.


Copyright © 2023 Elsevier, except certain content provided by third parties

Cookies are used by this site.

USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.