Why does the frog heart, removed from the body, continue to contract in a chemical solution for several hours?

Not only the heart of the frog can be maintained in a normal state after being removed. This can be done with a person’s heart. The thing is that any heart contracts regardless of the nerve impulses of the brain. Electrical impulses that cause the muscle to contract arise directly in the organ itself. Due to this, in cases of death of a person’s brain, his heart can often be kept in working order for further transplantation to a patient in need. But the heart of a cobra and many snakes does not need various solutions and apparatus. It can beat for several hours after extraction.