when did blood transfusions become safer and why
Blood transfusion It was not until 1901, when the Austrian Karl Landsteiner discovered three human blood groups (O, A, and B), that blood transfusion was put onto a scientific basis and became safer.
Eye injuries during general anaesthesia Methods to prevent intraoperative corneal injuries include
Swallowing 5) Closure of the nasopharynx
Vein Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.
Economic nationalism While the coining of the term "
Bull riding The flank strap