1 Hypoxya: Histotoxic hypoxia: Cause by drugs Anemic hypoxia: Caused by smoking cigarettes Hypoxic Hypoxia: Reduced partial oxygen pressure in the lung 2 Symptoms: -Bends (joints) - Bubbles in the joints cause rheumatic-like pains called the bends. (descompression sickness) -Skin (creeps) - Nitrogen bubbles released under the skin causes the creeps when the sufferer feels that a small company colony of ants are crawling over or just under the skin -Chokes (respiratory system) - Nitrogen bubbles may get caught in the capillaries of the lungs blocking the pulmonary blood flow. This leads to serious shortness of breath. -Staggers (brain) - The bubbles effect the blood supply to the brain and the nervous system. This effect is known as the staggers. -Depends on the: 3 Atmosphere gases: 78% Nitrogen 21% Oxygen 0,03 Carbon Dioxide Rest rare gases 4 5 Sleep regulation Elevated sleep drive Sleep desynchronisation Sleep inertia 6 James Reason types of errors