Q1. Read the passage carefully and prepare notes using appropriate abbreviations. 1X3 The work of the heart can never be interrupted. The heart's job is to keep oxygen-rich blood flowing through the body. All the body cells need a constant supply of oxygen, especially those in the brain. The brain cells live only four to five minutes after their oxygen is cut off, and then death comes to the entire body. The heart is a specialized muscle that serves a pump. This pump is divided into four chambers connected by tiny doors called walls. The chambers work to keep blood flowing round the body, in a circle.
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the job of heart is to keep oxigen rich blood flowing through the body. please give brilliant answer
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