CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY
Tissue and medical thermometer. Tissues are used when the sinus and nasal membranes become inflamed during a cold or other infection, forming large amounts of mucus. A medical thermometer is used to measure body temperature. The thermometer scale is in both degrees Celsius and degrees Fahrenheit. The red arrow marks normal human body temperature (37 degrees Celsius; 98.6 degrees Fahrenheit). A rise in body temperature often indicates a fever, where the rise in body temperature is part of the defence mechanism against a viral infection.
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