Advertisements
Advertisements
प्रश्न
Some people in old age complain of stiff joints. What do you think could be a possible reason for it?
उत्तर
Some joints like shoulder joint, knee joint need to be held firmly in position to be well-lubricated. Such joints contain a lubricating fluid called synovial fluid, which serves as a cushion between the bones and removes friction during movements. As we age, the joint movement becomes stiffer and less flexible because the amount of lubricating fluid inside the joints decreases and the cartilage becomes thinner. Ligaments also tend to shorten and lose some flexibility, making the joints feel stiff.
APPEARS IN
संबंधित प्रश्न
What are the different types of joints? Give one example of each type.
The wrist bones are examples of ______ joints.
The bone of the upper jaw is an immovable bone.
Match the following
| 1. | Humerus | a. | Forearm |
| 2. | Radius | b. | Leg |
| 3. | Tarsals | c. | Upper arm |
| 4. | Atlas | d. | vertebral column |
Match the following
| 1. | Ball & socket | a. | Elbow |
| 2. | Saddle | b. | Spine |
| 3. | Hinge | c. | Thumb |
| 4. | Gliding | d. | Hip |
Name two joints with examples.
Provide one-word answers to the statement given below
Joint where our neck joins the head.
Which type of movement would have been possible if
we were to have a ball and socket joint between our neck and head.
Name the type of joint between the following:
Between phalanges
Name the type of joint between the following:
Between cranial bones
