HTHSCI 1LL3 Study Guide - Quiz Guide: Respiratory Acidosis, Metabolic Acidosis, Anion Gap

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1LL3
• Professor: Teresa Mccurdy

Document Summary

Acid-base homeostasis requires the lungs, kidneys, and a complex system of buffers. An arterial blood ph <7. 35 is acidemia, whereas an arterial ph >7. 45 is termed an alkalemia. Disorders that lower arterial ph are acidosis, and disorders that increase arterial ph are alkalosis. The henderson hasselbach equation says that the ratio of bicarbonate and carbon dioxide, not their actual values, determines ph. Main function of the lungs is regulation of the partial pressure of carbon dioxide (paco2). normal value of 35 45 mm hg. Located in the arteries and the medulla are chemoreceptors that may increase or decrease ventilation in response to the patient"s ph, arterial partial pressure of oxygen and arterial partial pressure of carbon dioxide. Other function of the lungs is the distribution of oxygen. In acid-base homeostasis, the role of the kidneys is to maintain the concentration of bicarbonate (hco3) in the blood at approximately 24 meq/l.