OCEAN OF KNOWLEDGE

  How many days for quarantine if anybody travelling from another city  If somebody traveling in another city they must be quarantine must be in 1 month. Because covid-19 symptoms are show in with in 15 days. And you should be take care yourself. in during days your body shows any kind of symptoms. in this case fast consult near covid-19 hospital in your nearest city. Then after you should be take precaution in the supervision of specialist.  so, you should take care yourself because prevention is batter then cure.

     Organs and Organ Systems Your body is an amazing machine! Tissues are organized into organs and organs are  organized into organ systems. Get ready—in the upcoming lessons in this learning  package you will learn about four of the major body systems: • the circulatory system • the respiratory system  • the digestive system • the excretory system

The Circulatory System—the Body's Moving  company The circulatory system is an organ system that includes the heart, the blood vessels, and the blood itself. It has three functions: • to transport materials (i.e., nutrients and oxygen) and cells from one place to another • to defend the body against invasion by harmful organisms by taking white blood cells to an area of injury or infection • to maintain a constant body temperature Your body has a closed network of blood vessels—hollow tubes—that move blood and nutrients. A pumping organ—the heart—pushes blood through this network of vessels.