Some are good, some aren't so good...

Images I made or edited

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Scientific

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Flow-Volume Loop. Positive values represent expiration, negative values represent inspiration. The trace moves clockwise for expiration followed by inspiration. (Note the FEV1, FEVA1/2 and FEV3 values are arbitrary in this graph and just shown for illustrative purposes, they must be recorded as part of the experiment).
File:Cardiacfunctioncurve.png
Single cardiac function curve
File:Cardiacfunctionfamily.png
Graph of a family of cardiac function curve at various heart rates. As the demand for cardiac output increases, the heart rate increases and the curve shifts upwards along the red line. This prevents the right atrial pressure needing to increase.
File:Gibraltar-flags-national-pride.jpg
The somewhat disputed status of Gibraltar gives its inhabitants a great deal of national pride. This can be seen in these flags hanging from a building in the tercentenary celebrations of the cession
 
Mechanism of glucose dependent insulin release
 
Diagram summarising control of stomach acid secretion, emphasising interaction between the body and antrum.



Shields

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Cambridge University

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Cambridge University - flat
File:Cambridge University Crest - embossed.png
Cambridge University - embossed
File:Magdalene College Crest - flat.png
Magdalene College - flat
File:Magdalene College Crest - embossed.png
Magdalene College - embossed
 
St Catharine's College - flat
 
St Catharine's College - embossed
File:St John's College Crest - flat.png
St John's College - flat
File:St John's College Crest - embossed.png
St John's College - embossed
 
Trinity College - flat
File:Trinity College Crest - embossed.png
Trinity College - embossed

Image:Robinson College Crest - flat.png - Robinson College - flat Image:Robinson College Crest - embossed.png - Robinson College - embossed

 
Churchill College - flat
File:Queens' College Crest - flat.png
Queens' College - flat
File:Queens' College Crest - embossed.png
Queens' College - embossed
File:Jesus College Crest - flat.png
Jesus College - flat
File:Jesus College Crest - embossed.png
Jesus College - embossed
 
Downing College - embossed


Others

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File:Coat of Arms of the Municipality of Madrid.jpg
(Unofficial) but better looking Coat of Arms of the Municipality of Madrid
File:Royal Electrical and Mechanical Engineers.jpg
The Royal Electrical and Mechanical Engineers logo
File:Malaysia Coat of Arms - embossed.png
Old version of the Malaysia Coats of Arms where tiger heads, Penang, Sabah and Sarawak representations are different


Images I uploaded

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Heart cut away showing Bundle of His
Schematic representation of the atrioventricular bundle of His. The bundle, represented in red, originates near the orifice of the coronary sinus, undergoes slight enlargement to form the AV node. The AV node tapers down into the bundle of HIS, which passes into the ventricular septum and divides into two bundle branches, the left and right bundles. The ultimate distribution cannot be completely shown in this diagram.