General Knowledge Questions

The mammalian heartis called myogenic (myo = muscle, genie = originating from). It means the heart beat or the activities of the heart are auto regulated which originates from a muscle called nodal tissue.In the human heart,heartbeat originates and contraction is initiated by a special modified heart muscle known as sinoatrial node. It is located in the right atrium; while the QRS waves are the depolarisation of the ventricles, which initiates the ventricular contraction.The T-wave represents the repolarisation,that is, the return of the ventricles from excited tonormal state.Hepatic portal system is the unique vascular connection that exists between the digestive tract and liver. This vein carries blood from intestine to the liver.

Micronutrients are ne tothe nutrients which our body requires for functioning and to maintain immune to micro organisms. They include 

1) Vitamins 

2) Minerals

• Vitamins: A,B1,B2,B3,B5,B6,B8,B9,B12,C,D,E,K.

• Major minerals: calcium, magnesium, chlorine, phosphorus, potassium and sodium.

• Oligo-elements (trace minerals): iron, copper, zinc, iodine, manganese, chromium, cobalt, selenium.

Samuel Gompers was a leading proponent of workers' rights. He was the first president of the American Federation of Labor, an organization that represented skilled workers from many different industries. Gompers advocated using collective bargaining or negotiations and strikes to gain greater rights for workers.

Monazite is an ore of cerium, thorium and lanthanum.