body systems

What are the five senses? The five human senses are the sense of seeing, hearing, touching, smelling and tasting. These five human senses play a unique...

What is immune system? Immune system is the defense system of the body. Namely immune system is the body's ability to fight against  diseases. Immunity...

When you think about something tasty, digestive system begins to release more saliva than  normal levels. It is common to say: "It makes my mouth water”. This...