Psychology 2036A/B Lecture Notes - Lecture 17: Partial Pressure, Peripheral Chemoreceptors, Hypoventilation

• School: Western University
• Department: Psychology
• Course: Psychology 2036A/B
• Professor: Doug Hazelwood

Document Summary

Hyperbaria: of or involving a gas at a pressure greater than normal. As you go down in the water, you are going to see dramatic changes in pressure. As you go deeper, pressure increases, and partial pressure of nitrogen will increase. Changes in pressure drive mercury up- pressures are extreme. = a drowsy state induced by breathing air under higher than atmospheric pressure, for example, in deep-sea diving. Pn2 (nitrogen) increases and nitrogen is dissolved in the blood (sea level pr- 1l in blood) Blue line is solubility of nitrogen vs. temperature. Solubility of nitrogen isn"t high but there"s so much in the atmosphere that it leads to significant nitrogen into blood stream. Returning to the surface nitrogen gas will bubble within the body. Pressure decreases as you rise to the surface causing nitrogen to come out of the solution. Allows tissue time to adjust to the new pressure (nitrogen is eliminated through ventilation)