EVERYDAY SCIENCE

Detailed explanation-1: -Hemostasis: Just after an injury occurs to the tissues, the damaged blood vessels contract (narrow down) quickly, and the blood clot forms at the wound site. This prevents bleeding at the wound site and prevents the entry of bacteria inside the wound.

Detailed explanation-2: -The skin and mucous membranes act as a physical barrier preventing penetration by microbes. If the skin is cut then the blood produces a clot which seals the wound and prevents microbes from entering.

Detailed explanation-3: -Streptokinase is the product produced by the bacterium Streptococcus. This is known as clot buster. This chemical helps in removing clots from the blood vessels of patients who have undergone myocardial infarction.

Detailed explanation-4: -Blood clotting normally occurs when there is damage to a blood vessel. Platelets immediately begin to adhere to the cut edges of the vessel and release chemicals to attract even more platelets. A platelet plug is formed, and the external bleeding stops.

Detailed explanation-5: -Wear loose-fitting clothes, socks, or stockings. Raise your legs 6 inches above your heart from time to time. Wear special stockings (called compression stockings) if your doctor prescribes them. Do exercises your doctor gives you. Change your position often, especially during a long trip. More items