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College Physics (Urone)
Found in: Page 468

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Short Answer

Water expands significantly when it freezes: a volume increase of about \({\rm{9\% }}\) occurs. As a result of this expansion and because of the formation and growth of crystals as water freezes, anywhere from \({\rm{10\% }}\) to \({\rm{30\% }}\) of biological cells are burst when animal or plant material is frozen. Discuss the implications of this cell damage for the prospect of preserving human bodies by freezing so that they can be thawed at some future date when it is hoped that all diseases are curable

In the day-to-day medical field, freezing is an extremely useful technique for storing living cells, at ultra-low temperatures. Cryonics is one extreme of cryopreservation, which is an attempt to preserve the whole body frozen in the hope that one day it will be possible to revive it.

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Step by Step Solution

Step 1: Conceptual Introduction

An object's kinetic energy is the energy it has as a result of its motion. It is the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body keeps its kinetic energy gained during acceleration unless its speed changes.

Step 2: Conservation of human body at low temperature

The idea of conserving a human body at very low temperatures in the hope that it will be rehabilitated by future medical technology has been a staple of fantasy. If an individual is cooled below -50c the water within their cells frees and creates ice crystals. As ice is less dense than liquid, it takes more room. Therefore the crystals punch through the cell membrane causing severe harm.

Cryonic preservation facilities decide to overcome this by using a method called vitrification. This replaces a number of the body’s water with cryoprotectants agents, in a trial to scale back the number of ice crystal formations. As yet there is no proof that we can vitrifying human organs.

If scientists did someday compute the way to with success cryopreserve an entire body, there is still a matter of conveyance the body back to life. There are other significant complications, like the fact that cooling a body to -1960c makes it improbably brittle. The brain which hasseveral connections for each of the hundred billion neurons is especially sensitive to heating and cooling.

Different complications arise with this method because we are not even at the stage of cryopreserving organs yet, so doing it with a whole body would be a huge challenge for us.

So we can hope that in the future we will achieve the method of preservation of the body, and the diseases are curable.

Therefore, the cells will be damaged severely.

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