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Blood, Oxygen, Carbon dioxide and Carbon Monoxide

Learn more about the circulatory system and respiratory system. How does it all work and what can go wrong? Cellular respiration. Red blood cells and plasma. Haemoglobin. Carbon monoxide poisoning.

Thanks to Easy Dive Theory for making this video

More on the Respiratory System- Mammalian Reflex

Find out more about the respiratory system. Explore respiratory system problems. Breathing reflex and hypercapnia. Hyperventilation and shallow-water black-out. The Mammelian Reflex.

Thanks to Easy Dive Theory for making this video

The Respiratory System

Find out about the respiratory system and its relevance to diving. explore gas exchange under high pressure and explainations. Explore gas exchange under high pressure and explains nitrogen sickness and ‘the bends’.

Thank you to Dr Matt & Dr Mike for making the video

Temperature-Related Problems

Temperature-related problems can be a big issue for divers. When we dive it is proper to wear the right, correct-fitting exposure suit to avoid temperature-related problems. Hyperthermia, Advanced hypothermia heat exhaustion and heat stroke. Vasodilatation and vasoconstriction.

Thanks to Easy Dive Theory for making this video

Lung Over Expansion Injuries

Explore lung over-expansion injuries. Lung over-expansion injuries are serious types of decompression sickness that can be life-threatening. Arterial gas embolism, pneumothorax, mediastinal emphysema, and subcutaneous emphysema. Decompression illness.

Thanks to Easy Dive Theory for making this video

How to Perfect Your Weighting for Scuba Diving! (1st Basic Principle of Scuba Diving)

How to Calculate Buoyancy

Learn how to calculate buoyancy. Find how to calculate how to make objects neutrally buoyant, positively buoyant and negatively buoyant and the correct formula to use in calculating buoyancy.

Constants Used

METRIC

  • 1 litre of salt water weighs 1.03 kilograms
  • 1 litre of fresh water weighs 1 kilogram
  • Pressure increases by 1 atm every 10 metres of salt water
  • Pressure increases by 1 atm every 10.3 metres of fresh water Pressure changes per unit of salt water = 0.100 atm/m
  • Pressure changes per unit of fresh water = 0.097 atm/m

IMPERIAL

  • 1 cubic foot of salt water weighs 64 pounds
  • 1 cubic foot of fresh water weighs 62.4 pounds
  • Pressure increases by 1 atm every 33 feet of salt water
  • Pressure increases by 1 atm every 34 feet of fresh water
  • Pressure changes per unit of salt water = 0.445 psi/ft or 0.0303 atm/ft
  • Pressure changes per unit of fresh water = 0.432 psi/ft or 0.0294 atm/ft

Thanks to Easy Dive Theory for making this video

Partial Pressure Explained

Learn about partial pressure in a gas mix and how it changes with depth. Learn how this applies to using enriched air nitrox.

Thanks to Easy Dive Theory for making this video

Learn about Buoyancy

Buoyancy affects anything that goes in water and whether it sinks or floats. Watch the video to find out more about buoyancy and why some things float easier than others. Find out how buoyancy applies to diving.

Thanks to Easy Dive Theory for making this video

Top Scuba Diving Laws of Physics

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