PHYL 4504 Lecture Notes - Lecture 13: Central Chemoreceptors, Viscosity, Erythropoietin

• School: Dalhousie University
• Department: Physiology
• Course: PHYL 4504
• Professor: Elizabeth Cowley

Document Summary

Phyl 4504 lecture 13 october 19, 2020 abnormal breathing patterns; the respiratory system under stress. Objectives: diagram the abnormal breathing patterns seen in obstructive and central sleep apnea, cheynes- Stokes, biot"s and kussmaul"s respiration and recognize their causes: be able to explain the relationship between altitude and barometric pressure and how this affects alveolar and arterial gases. List the acute effects of hypoxia: know the symptoms of acute and chronic mountains sickness, be able to explain the 5 main mechanisms of acclimatization to high altitude. Increased co2 stimulates respiratory urge = sudden attempt to breathe, loud snorts, gasps, snoring. During sleep, about 1/3 of all people have brief periods of apnea, which is the absence of spontaneous breathing or the effects of some type of hypoventilation with no effects on blood gases. Pleural pressure increases because the resistance of airflow is increasing high due to the obstruction. The person is attempting to make vigorous respiratory efforts against an obstruction.