BIOL 208 Lecture Notes - Lecture 23: Lung Volumes, Autoregulation, Perfusion
19 May 2018
School
Department
Course
Professor
Anatomy 2
Lecture 23
April 26, 2018
Minute respiratory volume
- Aka minute ventilation
- MRV = TV x respiratory rate/ min (12) = 6,000 ml
Ventilation perfusion coupling
- Blood flow decreases if there is decrease in amount of air going to alveoli
- Blood flow shifted to alveoli with more air
- Ventilation
- Amount of air coming in/out of alveoli
- Perfusion
- Amount of blood flow through vessels
Autoregulation
- Ability to get max amount of O2 into blood flow
Hypoxia/anoxia
- Refers to general low level of O2 available for tissue use
Hypoxemia/hypoxemic hypoxia
- Lack of O2 in arterial blood
PO2
Anemic hypoxia
- Poor functioning of hemoglobin
- Poor functioning of red blood cells
Ischemia
- Reduction in blood flow for some time
Ischemic attack/stagnant hypoxia
- Impaired blood flow
Histotoxic
- Able to use O2; cells can’t use O2
Document Summary
Mrv = tv x respiratory rate/ min (12) = 6,000 ml. Blood flow decreases if there is decrease in amount of air going to alveoli. Blood flow shifted to alveoli with more air. Amount of air coming in/out of alveoli. Ability to get max amount of o2 into blood flow. Refers to general low level of o2 available for tissue use. Reduction in blood flow for some time. Able to use o2; cells can"t use o2. * condition of o2 starvation that results whenever there is interruption or failure in delivery of o2 to tissues. Each gas pressure accents it"s own partial pressure. Quantity of gas dissolved in liquid to partial pressure of gas and solubility coefficient of gas, and liquid temperature. Increase in number means great capacity to dissolve fluid. Every ten meters people descend, pressure doubles. Ascending too fast and gases causes bubble.
