In myocardial infarction (MI) there is necrosis of cardiac muscle due to inadequate coronary circulation. Sudden death may occur when obstruction to coronary flow is precarious. Most deaths occurring within 24 hours of the onset of attack are due to ventricular fibrillation. Anatomy of Coronary Arteries: There are three main sources of coronary arterial blood supply: (1) The anterior descending [...]
In this article we will discuss about the diseases caused by mosquitoes. The diseases are: 1. Yellow Fever 2. Dengue Fever 3. Chikungunya. Disease # 1. Yellow Fever: It is transmitted by Aedes and other mosquitoes and is an acute specific viral fever of short duration, varying in severity. The severe cases are characterised by toxic jaundice, albuminuria and haemorrhages [...]
Antigen (Ag) antibody (Ab) reactions occur when an antigen combines with a corresponding antibody to produce an immune complex. Therefore, an antigen-antibody reaction is thus a bimolecular association which is similar to an enzyme-substrate interaction but the only difference is that antigen-antibody reaction does not lead to an irreversible chemical interaction. The basis for antigen-antibody reactions are the non-covalent interactions [...]