Select your answer:

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First Aid Bleeding Sterile Medication Products Blood types and Blood Components CPR Organic Compounds, Minerals and Enzymes Immunology IBD Anatomy and Physiology Vaccines Human Organs Breathing System Life Processes Excretion Digestive System Medical Terminology Fats And Oil Pulse First Aid Check upOther quiz:
Medicine on the Western Front › ViewIn 1915, Richard Leisohn discovered that by adding what to blood, the need for donor to donor transfusion was removed?
A. Sodium Nitrate
B. Sodium Citrate
C. Sodium Chloride
D. Sodium Concentrate
Human Body Systems › View
Which system takes food into the body, breaks down food, and absorbs the digested materials?
A. respiratory
B. circulatory
C. digestive
D. excretory