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Skeletal specimens can be used to study the skeletal system of animals, divided into monoskeletal specimens and scattered.
There are two types of skeletal specimens. Common production methods for animal bone specimens mainly include insect erosion, chemical corrosion, natural corrosion and boiling.
First, the insect erosion method
Insect erosion is the method of encroaching on the muscles attached to the bone specimen by organisms to remove the bone.
A way to leave it intact. The method was first used by the cyprinus, too.
There are reports of mealworms, ants, etc. The preparation process is simple. Less harmful to the human body.
Second, chemical corrosion method
Chemical corrosion is a method of soaking bone specimens with corrosive solutions and then removing the muscles on the bones to make bone specimens. The commonly used corrosion liquid is sodium hydroxide solution, but it has been found that the concentration of sodium hydroxide and the time it has not been foamed will affect the corrosion effect and speed.
According to the size and texture of the bone grid, different drug concentrations are selected for corrosion. In general, the coarser the bone, the greater the concentration of sodium hydroxide required and the longer the corrosion time. Such as avian skulls, vertebrae and sterile ribs. When the sodium hydroxide concentrations used in the claw bone and the thick thigh bone were 2.0%, 3.0%, 5.0% and 5.0-7.0%, respectively, the shoulder erosion effect was better.
Third, the boiling method
Boiling method: It is a method of boiling the treated animal bones in a container with water and a small amount of lye (such as sodium carbonate or sodium hydroxide, etc.), and when the ligaments turn yellow, the animal bone specimens obtained by scraping soft tissues are taken out. If it is not cleaned up, cook in a lower concentration of lye for a while, and then remove the remaining tissue until the soft tissue on the bone is removed. Similarly, lye concentration and boiling temperature also affect the effectiveness of removing muscles and soft tissues from bones.
Fourth, natural corrosion method
The natural corrosion method is a method of obtaining animal bone specimens by burying them in soil or soaking them in water, so that muscles and other tissues are naturally decomposed and decomposed, and then cleaned, degreased, bleached and other treatments.
In addition, the above several preparation methods can also be combined, such as boiling method and natural corrosion method, chemical corrosion method and boiling method, etc., can prepare some good bone specimens.