Pulmonary changes during exercise
Pulmonary changes during exercise
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Glycolysis
Citric acid cycle
Electron transport chain and oxidative phosphorylation
Nitrogen and urea cycle
Respiratory alkalosis
Respiratory acidosis
Respiratory system anatomy and physiology
Lung volumes and capacities
Compliance of lungs and chest wall
Restrictive lung diseases
Regulation of pulmonary blood flow
The role of the kidney in acid-base balance
Renal system anatomy and physiology
Sodium homeostasis
Cardiovascular system anatomy and physiology
Blood pressure, blood flow, and resistance
Resistance to blood flow
Microcirculation and Starling forces
Cardiac afterload
Frank-Starling relationship
Stroke volume, ejection fraction, and cardiac output
Measuring cardiac output (Fick principle)
Cardiac conduction system
ECG intervals
Muscle contraction
Slow twitch and fast twitch muscle fibers
Neuron action potential
Renal clearance
Glomerular filtration
Measuring renal plasma flow and renal blood flow
Regulation of renal blood flow
Loop of Henle
Proximal convoluted tubule
Distal convoluted tubule
Potassium homeostasis
Phosphate, calcium and magnesium homeostasis
Renin-angiotensin-aldosterone system
Antidiuretic hormone
Buffering and Henderson-Hasselbalch equation
Physiologic pH and buffers
Acid-base map and compensatory mechanisms
Alveolar surface tension and surfactant
Combined pressure-volume curves for the lung and chest wall
Pulmonary changes during exercise
Pulmonary changes at high altitude and altitude sickness
Mitosis and meiosis
Inheritance patterns
Cystic fibrosis
Action potentials in pacemaker cells
Cardiac cycle
Action potentials in myocytes
Cardiac excitation-contraction coupling
Changes in pressure-volume loops
Arteriole, venule and capillary histology
Baroreceptors
Chemoreceptors
Pressures in the cardiovascular system
Excitability and refractory periods
Normal heart sounds
Abnormal heart sounds
Cholinergic receptors
Parasympathetic nervous system
Antimalarials
Antimetabolites for cancer treatment
Anti-tumor antibiotics
Antimetabolites: Sulfonamides and trimethoprim
Antituberculosis medications
Extrinsic hemolytic normocytic anemia: Pathology review
Anti-mite and louse medications
Amnesia, dissociative disorders and delirium: Pathology review
Childhood and early-onset psychological disorders: Pathology review
Developmental and learning disorders: Pathology review
Drug misuse, intoxication and withdrawal: Alcohol: Pathology review
Drug misuse, intoxication and withdrawal: Hallucinogens: Pathology review
Drug misuse, intoxication and withdrawal: Other depressants: Pathology review
Drug misuse, intoxication and withdrawal: Stimulants: Pathology review
Eating disorders: Pathology review
Malingering, factitious disorders and somatoform disorders: Pathology review
Mood disorders: Pathology review
Personality disorders: Pathology review
Psychiatric emergencies: Pathology review
Psychological sleep disorders: Pathology review
Schizophrenia spectrum disorders: Pathology review
Trauma- and stress-related disorders: Pathology review
Environmental and chemical toxicities: Pathology review
Medication overdoses and toxicities: Pathology review
Flashcards
Pulmonary changes during exercise
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Questions
USMLE® Step 1 style questions USMLE
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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?
Key Takeaways
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.