Elizabeth Martin and Robert Hine. Latest Edition (7 ed.) Fully revised and updated, the sixth edition of this dictionary provides comprehensive coverage of biology, biophysics, and biochemistry, as well as key terms from medicine and palaeontology.
For example, if someone scratches a mole until it bleeds, the resulting lesion, a crust, is now a secondary skin lesion. The most common secondary skin lesions include: 1  crust: a crust, or a scab, is created when dried blood forms over a scratched and irritated skin lesion. 2  ulcer: typically caused by a bacterial infection or physical trauma. 3  scale: patches of skin cells that build up and then fall off the skin.
9. Bloodborne pathogens are disease-causing microorganisms that are present in: (X)Human blood and body fluids that may contain blood()Sweat, tears and saliva()River water and certain kinds of soil()None of the above 10. If you wear gloves while cleaning up body fluids, you should still wash your hands afterwards.. Bloodborne pathogens are disease-causing microorganisms that are present in: (X)Human blood and body fluids that may contain blood()Sweat, tears and saliva()River water and certain kinds of soil()None of the above 10. If you wear gloves while cleaning up body fluids, you should still wash your hands afterwards.