DESIGER

When solids and liquids, such as mineral acids, ammonia, cyanides, and mercury, are heated, many poisonous gases are released.
Among these poisonous gases, are mineral acids, ammonia, cyanides and mercury.
Other types of poisonous gases are specially manufactured for war purposes.
Poisonous gases affect the body in various ways, and many are potentially fatal.

Gas poisoning symptoms

Carbon Monoxide Poisoning

Carbon monoxide, and mixtures that contain it, prevent the blood from carrying oxygen to tissues;

Hydrogen Sulfide Poisoning

Hydrogen sulfide causes respiratory paralysis;

Carbon Tetrachloride Poisoning

Carbon tetrachloride damages the liver and kidneys;

Carbon Disulfide Poisoning

Carbon disulfide produces nerve damage and ultimately causes paralysis and psychoses;

Tear Gases Poisoning

Tear gases such as xylyl bromide, severely irritate the eyes, nose, and throat;

Nerve Gases Poisoning

Various nerve gases prevent the proper functioning of nerve impulses;

Chlorine and Phosgene Poisoning

lung irritant gases, such as chlorine and phosgene, attack the eyes, nose, throat, and lungs;

Vesicant gases Poisoning

Vesicant gases, such as mustard gas and lewisite gas (containing arsenic), cause blisters and ulcers on the skin;

Nauseant gases Poisoning

Nauseant gases, such as chloropicrin, induce vomiting;

Nose irritant gases Poisoning

Nose irritant gases, such as diphenylchlorarsine, cause pain, sneezing, depression, and sometimes vomiting.

How do people come in contact with poisonous gases?

• Carbon monoxide is the most poisonous gas likely to be present in domestic surroundings. For example, when an automobile engine has been left running in an enclosed space, such as a garage, carbon monoxide can accumulate to toxic levels.
• Carbon tetrachloride is used in dry cleaning.
• Hydrogen sulfide is a poisonous gas produced in some chemical processes.
• Tear gases are used by police and military personnel.
• Carbon disulfide is used in the rubber industry and in making rayon.

Attention deficit disorder is a condition that usually affects school-aged children and is characterized by inattention, impulsivity, or hyperactivity.
These disorders are occasionally a result of environmental stress.
Most cases, however, are felt to have a biological basis.
Attention deficit disorders should be differentiated from mental retardation, schizophrenia, or a manic-depressive state.
The onset is before the age of 7 years, and an estimated 5 percent of school-aged children exhibit characteristics of some form of learning disorder.
 I.Q. tests taken by these children are normal, and there are no neurologic abnormalities.
Attention deficit disorders may result in poor school performance.
In some cases, there are specific learning disabilities, such as visual-motor or speech defects.

Attention Deficit Disorder Treatment

Treatment of Attention Deficit Disorder is complex and should be coordinated with specific educators. There is no proof that dietary changes are beneficial.

Choriocarcinoma symptoms

Bones are hard tissues that are living parts of your body, just as your brain and heart are living parts. Bones contain cells that divide and multiply, causing you to grow.
These cells are also always rebuilding the bony tissue to keep it strong.
Rebuilding happens less as people grow older. So a broken bone will often heal much more quickly in a child than in an adult.
Bones store substances called minerals, which your body uses. Calcium is a mineral. It helps to make the bones hard.
Bones have a strong covering, called periosteum.
Inside, there is a hard layer of compact bone.
A long bone, such as the thigh bone, has spongy tissue at its ends, called cancellous bone, and soft marrow in its hollow center.

Some parts of your skeleton, such as your arms and legs, have only a few long bones. Other parts, such as your hands and feet, have many small bones.

How are bones held together?

Your bones are held together by strong, flexible straps called ligaments.
The ends of the bones are covered with a smooth, rubbery substance called cartilage. This is the same kind of substance that forms the tip of your nose.
Cartilage works like a cushion so that the bones don’t grind against each other. Cartilage is covered in a liquid called synovial fluid.
This keeps the bones moving smoothly, like oil in the parts of a machine.