Complete each sentence by dragging the proper word or phrase into the appropriate position. Then place each sentence in order of mobility beginning with the least mobile.1. When two bones join together and fuse so that no visible separation occurs, it is referred to as a(n) , or bony joint.2. Bones that join together and are held in place with threads of collagen, form a joint that is called a(n) .3. The most complex joints are called joints. They display varying amounts of mobility.4. Bones joined together with cartilage between the ends of the bones, form a joint called a(n) .1. amphiarthrosis2. suture3. gomphosis4. synarthrosis5. synostosis6. synovial
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Ответ:
1. When two bones join together and fuse so that no visible separation occurs, it is referred to as a(n) synostosis, or bony joint.
2. Bones that join together and are held in place with threads of collagen, form a joint that is called a(n) synarthrosis.
3. The most complex joints are called synovial joints. They display varying amounts of mobility.
4. Bones joined together with cartilage between the ends of the bones, form a joint called a(n) amphiarthrosis.
Explanation:
The ossification of the connective tissue between two bones results in the fusion of them. As a result, now there is one bone instead of two. It's is called synostosis.
A synarthrosis is a joint that has very little or no movement at all. It has threads of collagen around them that keep the joint together.
A synovial joint is a diarthrosis joint. They have a wide range of mobility and are complex due to the number of components:
A fibrous joint capsule connected to the two bones. A synovial membrane. Synovial fluid to lubricate the joint.Articular cartilage on the bones' joint surfaces.An Amphiarthrosis is a joint with limited mobility. This type of joint has fibrocartilage that connects the two bones. We can find it in the pubic synthesis.
Ответ:
Examples of Inorganic Chemical Reactions that Emit Light
Written by Serm Murmson
Inorganic chemical reactions involve compounds without carbon atoms. Some of these chemical reactions emit light as the chemical compounds react. When light is emitted as a result of the chemical reaction, the reaction is said to be chemiluminescent. In many cases, this light is combined with heat energy, as in combustion reactions. Other times, little or no heat accompanies the light.
White Phosphorous and Oxygen
The combination of white phosphorous and oxygen results in a combustion reaction. Solid white phosphorous, or P4, ignites in the presence of oxygen gas. This reaction forms phosphorous pentoxide, or P2O5. This combustion reaction occurs spontaneously when white phosphorous is in the presence of oxygen. It burns immediately, emitting light and heat. Due to the spontaneity of this reaction, white phosphorus is typically stored in water.
Magnesium and Oxygen
Solid magnesium ribbon also undergoes a combustion reaction in the presence of oxygen. The outcome of this reaction is MgO, or magnesium oxide, and energy. This energy is emitted in the form of light and heat. The light emitted in this reaction is bright white light. For this reason, magnesium is commonly used in flares and fireworks. The combustion reaction of magnesium and oxygen needs an input of energy. Therefore, you must ignite the solid magnesium with an initial flame.
Nitrogen Monoxide and Ozone
When nitrogen monoxide, NO, reacts with ozone, O3, the resulting molecules are nitrogen dioxide and oxygen gas. In this reaction, the nitrogen dioxide that forms is in an excited state; the molecule has more energy than it usually does. When it releases this energy, some of it can be given off in photons of light. In this way, the reaction of nitrogen monoxide and ozone is a chemiluminescent reaction. This reaction releases little or no heat.
Zinc Atoms and Nitrous Oxide
When zinc atoms react with nitrous oxide, N2O, the reaction is chemiluminescent. In this reaction, the zinc atoms are oxidized, and form zinc oxide. The zinc oxide molecules form in an excited state. They emit their excess energy in the form of light. This is another reaction in which the chemiluminescence is accompanied by little or no heat.