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2007-01-05 01:38:12 · 15 answers · asked by Trumacar 1 in Science & Mathematics Biology

15 answers

Within single cells water content ranges between 70 and 85%. The percent water in the entire body by weight varies with age, sex,and physical conditioning. Heart and lung contain the most water, about 80%. Fat (about 20%) and bone (about 43%) are among the lowest. Therefore, the total body is an average of all organs, blood, and extracellular fluids. Several physiology texts place average young men at 60% water, and young women at 50% water, the difference due to relatively more fat in females. Thus, a 70 kg young man has about 42 kg (or 42 liters) or water. With age fat increases and muscle decreases, so that in old age thebodymay contain only 45% water.Infants, by contrast,average 73% or more.

2007-01-05 01:49:52 · answer #1 · answered by Som™ 6 · 1 0

yes you are partially right, More than 70-90% of our body is water.
Water makes up 85% of our brain and 70% of the rest of our body. A significant fraction of the human body is water. This body water is distributed in different compartments in the body. Lean muscle tissue contains about 75% water. Blood contains 83% water, body fat contains 25% water and bone has 22% water.
Water is of major importance to all living things; in some organisms, up to 90 percent of their body weight comes from water. Up to 60 percent of the human body is water, the brain is composed of 70 percent water, and the lungs are nearly 90 percent water. About 83 percent of our blood is water, which helps digest our food, transport waste, and control body temperature. Each day humans must replace 2.4 litres of water, some through drinking and the rest taken by the body from the foods eaten.
There just wouldn't be any you, me, or Fido the dog without the existence of an ample liquid water supply on Earth. The unique qualities and properties of water are what make it so important and basic to life. The cells in our bodies are full of water. The excellent ability of water to dissolve so many substances allows our cells to use valuable nutrients, minerals, and chemicals in biological processes
Water's "stickiness" (from surface tension) plays a part in our body's ability to transport these materials all through ourselves. The carbohydrates and proteins that our bodies use as food are metabolized and transported by water in the bloodstream. No less important is the ability of water to transport waste material out of our bodies.

Within single cells water content ranges between 70 and 85%. The percent water in the entire body by weight varies with age, sex,and physical conditioning

2007-01-05 02:44:03 · answer #2 · answered by Anonymous · 0 0

No: "we" don't have "a" body.

A better question would have been, "Does water constitute 70% of the human body?"

See http://www.indiapost.com/members/story.php?story_id=4205

In answer to the question I believe you intended to ask, the following is an important quote from the above site:

"Water makes up more than two thirds of the weight of the human body. Human brain is made up of 95 percent water; blood is 62 percent and lungs 90 percent. Even as little as two percent drop in body water could trigger dehydration."

2007-01-05 03:04:40 · answer #3 · answered by wireflight 4 · 0 0

More than 70-90% of our body is water.
Water makes up 90% of our blood, 85% of our brain and 70% of the rest of our body. Even our bones and skeletal structure is 30% water

2007-01-05 01:48:39 · answer #4 · answered by heizel 2 · 0 0

A significant fraction of the human body is water. This body water is distributed in different compartments in the body. Lean muscle tissue contains about 75% water. Blood contains 83% water, body fat contains 25% water and bone has 22% water.

so overall about 51% of our body is water

2007-01-05 01:56:20 · answer #5 · answered by Anonymous · 1 0

2/3 of human body is water

2007-01-05 09:41:15 · answer #6 · answered by Hassan 1 · 1 0

Water is of major importance to all living things; in some organisms, up to 90 percent of their body weight comes from water. Up to 60 percent of the human body is water, the brain is composed of 70 percent water, and the lungs are nearly 90 percent water. About 83 percent of our blood is water, which helps digest our food, transport waste, and control body temperature. Each day humans must replace 2.4 litres of water, some through drinking and the rest taken by the body from the foods eaten.
There just wouldn't be any you, me, or Fido the dog without the existence of an ample liquid water supply on Earth. The unique qualities and properties of water are what make it so important and basic to life. The cells in our bodies are full of water. The excellent ability of water to dissolve so many substances allows our cells to use valuable nutrients, minerals, and chemicals in biological processes
Water's "stickiness" (from surface tension) plays a part in our body's ability to transport these materials all through ourselves. The carbohydrates and proteins that our bodies use as food are metabolized and transported by water in the bloodstream. No less important is the ability of water to transport waste material out of our bodies.

70% of the surface of the earth is covered in water.

2007-01-05 01:54:23 · answer #7 · answered by danielle Z 7 · 1 2

Yes. 70% of our bodies, including bones and vital organs are made of water.

2007-01-05 01:45:57 · answer #8 · answered by Amy_Lou 3 · 0 1

75

2007-01-05 01:41:46 · answer #9 · answered by emma m 4 · 0 1

i would say more than 70 %

2007-01-05 01:41:17 · answer #10 · answered by Alfred E. Newman 6 · 0 1

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