Answer:
Warm salt water has some quality of disinfectant. Some researchers shows that rinsing mouth from warm salt water can give relief from the inflamed gums caused by gingivitis.
It helps in rinsing the bacteria out of the mouth which can cause gum swelling and sore throat. It is also seen that warm salt water helps in killing some bacteria and do not allow pathogenic bacteria to accumulate in gums.
This is the reason why high salt concentration is used in pickles because it acts as a bactericidal agent
She needs to put the fingertip on ice to preserve it increasing the chances of medical staff being able to reattach it. Then seek medical help as soon as possible to stop the bleeding and prevent any infection in the wound and to have the fingertip reattached.
Answer is C. By exposure to mucous membranes of an infected person
Blood borne pathogens are microorganisms which are transmitted through the blood. Blood borne infections can be transmitted in the blood or body fluid such as saliva, mucus that can be mixed with blood and cause diseases like Hepatitis B and HIV (Human immuno deficiency virus). The most common method of transmission of pathogen through blood of an infected person when enters in the body of a healthy person through open wound.
