Here's a list of some of the great resources that have been used for the material on MedicalPhysiology.co.uk. There are also a few other really useful books and links that will hopefully be of interest.

Physiology

Textbook of Medical Physiology - Guyton & Hall

'...one of the must have books for any medical student or clinician.'  Read the review

Principles of Physiology for the Anaesthetist - Power & Kam

Biochemistry - Berg, Tymoczko & Stryer

Essential Haematology - Hoffbrand & Moss

Respiratory Physiology: The Essentials - West

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Other

The Doctor's Guide to Critical Appraisal - Gosall & Gosall

'...an easily accessible introduction to the vast topic of critical appraisal.'  Read the review

www.RapidSequence.org.uk

Run by the author of this site Rapid Sequence is an on-line journal club and blog for all things anaesthesia and critical care related. Check it out here.