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7 Organs You Can Live Without 0 5. The human body is a complex collection of organs and systems that work together to keep us alive and healthy. Some organs, such as the heart, are necessary to sustain life. But the human body is able to do without part or all of some organs, despite their useful functions. Lung. The human body typically comes equipped with two lungs that are divided into sections called lobes.
The brain can survive for 4 minutes without oxygen, then brain cells start dying. So if there is no heartbeat, the heart is not contracting, the blood is not circulating through the body, and there is no oxygen supply. Other tissues and organs can live longer without oxygen. For example an arm or leg can survive up to 6 hours.