Medical Physics

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  • Created by: RubyTiny
  • Created on: 30-04-12 15:44


·         An endoscope is a device used in medicine to see inside the body.  

·         An intense light ray enters a long section of glass at a precise angle, this results in total internal refraction.

·         Two bundles of fibres consisting of thin flexible glass rods are used in an endoscope; one carries the light beam to the object that is being viewed. The other carries the reflected image to the persons eye.

·         Endoscopes are covered in soft material so that they can be inserted into the body through natural openings such as the mouth. They can also be inserted through a small incision (This is called keyhole surgery)

·         Endoscopes are used to examine patient’s oesophagus, stomach, respiratory tract and so on. It is a non-invasive technique, because surgery is not required and it can be used on pregnant women.

Pulse Oximetry

·         Pulse oximetry is a non-invasive method that is used to determine the amount of oxygen carried by the haemoglobin in the person’s blood.





Very useful, thanks for sharing.

Miss KHP


Some nice and simple revision notes that can be added to your own revision notes.

Good for Edexcel Science especially.

Nice that you can test yourself once you have finished!

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