Physiology is defined as “the biological study of the functions of living organisms and their parts.” As a qualified diver, you need to understand how being underwater affects your body. If you have any questions regarding any points that you feel that may affect you, then seek professional medical advice from a diving doctor, a physician who is trained in diving medicine. In the “Physics” unit, you learned about buoyancy and, most importantly, the impact of increasing water pressure on gases. You will read about the effects these physics phenomena can have on your body.
The following are the unit objectives.
- Describe the respiratory and circulatory systems in the body
- Describe the effects of various gases that you breathe and exhale
- Define the effects of temperature change on the body
- Describe the effects of hypothermia and overheating
- Explain the pressure-related effects on the diver
- Explain the terms nitrogen narcosis and decompression sickness