Purpose of joints:
Joints are there in the body to join the bones with each other and permit the frictionless movement of the bones against each other. There are some joints which don’t permit movement and their purpose is to serve as the connecting point for two or more bones. Such joints are connecting the bones from different origins.
The extent of the movement:
The permissibility of the movement depends on the type of joints depending on certain factors as shared by www.dietsinreview.com. Some joints allow the motion of two bones to the full extent. While some allow just a few degrees of motion. There are some joints as well which doesn’t allow any type of motion. Such immobile joints are present in our skull.
Types of joints:
There are different classifications to classify the joints into various types. Difference systems of reference are used according to the situations. But almost all the systems are accepted by the experts. Here we are going to use one of the most used systems of classification which depends on the following two factors:
Now we will shed some light on defining these two factors.
The structure of the joints depends on the connecting material between them. The connecting tissues are used by the body to join the bones on the joints. There are various kinds of connecting tissues present in the body depending on the location. But the connecting tissues are not only limited to the joints. They are also present in various parts of the body like our ears are made up of one special type of connecting tissues called cartilage.
It totally depends on the mobility level of the bone involved with the joint. Depending on the location of the joint, it can range from fully mobile to completely immobile joint. The joints in our skull are completely immobile while the joints in our hand wrist are completely mobile. It actually depends on the type of the biological material present between them.
There are some joints which are totally immobile and you can’t move them like the ones present in the skull. There are some other immobile joints too in or body. The main function of such joint is to attach two bones together and to provide some kind of protection. Such joints are having connective tissues made up of fiber. Fibrous tissues are there in between them to keep them at a fixed place. There is no joint fluid in between such joints because there is no need to lower the friction.
Slightly mobile joint:
Slightly mobiles joints are those which allow a motion to a little extent. They are present in different parts of the body and connects the bones which don’t require a lot of motion. The bones having this type of joints are connected to each other with the cartilaginous connective tissue. There is no presence of fluid between such joints because they don’t do large degrees of motion hence there is no need to create a completely frictionless surface between them.