Three groups of drugs are used to reduce the stickiness of platelets, thus preventing platelets from clumping together to form platelet plugs. The anti-platelet drugs are most effective in preventing abnormal blood clots from forming in arteries (as opposed to veins). Aspirin and dipyridamoleâ (Aggrenox).
In order to react, colliding molecules must have a total kinetic energy equal to or greater than some minimum value [Figure 14.13(b)]. The minimum energy required to initiate a chemical reaction is called the activation energy, Ea. The value of Ea varies from reaction to reaction.
The minimum amount of energy your body requires to carry out these chemical processes is called the basal metabolic rate (BMR). Your BMR accounts for anything between 40% and 70% of your bodyâs daily energy requirements depending on your age and lifestyle. A âslow metabolismâ is more accurately described as a low BMR.