![]() The types of joints are - Ball and Socket Joints, Pivotal Joint, Hinge Joint and Fixed Joints.Ĭite this Simulator:.Joints help connect the bones together.The bone joints are of various kinds depending on the nature of joints and direction of movement they allow.Joints aid in body movements.There is a joint between the upper jaw and the rest of the head which is a fixed joint. When you open your mouth wide, you can move your lower jaw away from your head, but if you try to move your upper jaw, you will be able to move it. There are some bones in our head that are joined together at some joints. If you observe the hinges of the door carefully you will see that they allow the door to move only back and forth and in no other direction. This joint resembles the hinge of a door in that it permits movement in one plane only. The hinge joint allows only a back and forth movement. In the hinge joint, the convex surface of one bone fits into the concave surface of another, as in the elbow and the joints of the fingers. Movement at such a joint is limited to rotation around a central axis. In a pivotal joint a cylindrical bone rotates in a ring. It allows us to bend our head forward and backward and turn the head to our right or left. The joint where our neck joins the head is a pivotal joint. Another example of this joint is the hip. Such a joint allows movements in all directions. The rounded end of one bone fits into the cavity (hollow space) of the other bone. The cup-like depression is the part of the shoulder to which your arm is joined. ![]() This rounded bone with a ball-shaped surface is your arm and has the ball at its end. The Ball and socket joint consist of a rounded bone with a ball-shaped surface at one end which fits into the cup-like depression of another bone. There are different types of joints in our body to help us carry out different movements and activities. We can bend or move our body only at those points where bones meet. Similarly, there are many bones present in each part of the body. It is different bones joined together at the elbow. So, how do we bend our elbow? It is not one long bone from the upper arm to our wrist. The hard structures are the bones.īones cannot be bent. Have you thought about what exactly is joined together at these joints? If you press your fingers against the top of your head, shoulder, hands and legs including the fingers and toes, you get a feel of something hard pressing against your fingers. If our body has no joints, it would not be possible for us to move in any way at all. You might have noticed that you are able to bend or rotate our body in places where two parts of the body seem to be joined together - like elbow, shoulder or neck. Through all these movements you will notice that parts of your body can do various functions like – the ability to rotate completely or partially, can bend, lift objects or does not move at all. You can stretch your arm sideways and bend your arm to touch your shoulder with your fingers. You can bend your arm at the elbow and the leg at the knee. You can rotate your arm at the shoulder in a circular movement and stretch your arm sideways. Walking, crawling, flying and swimming - these are only a few of the ways in which animals move from one place to another. For example, a cow uses its legs to walk, a snake uses its whole body to slither or crawl, a bird uses its wings to fly, and a fish uses its fins to swim. There are different ways how animals move from place to place. You walk, run, skip, jump and move from place to place. You also move from one place to another - you get up and go to your teacher, or to the play ground, or go home after school. A few examples of when this happens are – your hand moves when you are writing in your notebook, your head moves when you turn and look at your friend. ![]() ![]() There will be movements in your body as you breathe.ĭifferent parts of your body move while you remain at the same place. You must be blinking your eyes from time to time. Sit absolutely still and observe the movements taking place in your body. There are so many movements that happen in our bodies.
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