Question

Which of the following is an immovable joint?
A)Synarthrosis
B)Hinge joint
C)Gliding joint
D)None of the above

Answer 1

Hint: Joints are defined as the contact point between the bones and the cartilages. These are required for the movement of the bones. Most of the joints in the human body are synovial joints and they are located in the areas where the frequent and easy mobility is important.

Complete answer:
Joints are divided into three types based on its mobility. They are named as synovial joint, fibrous joints and cartilaginous joints. Synovial joints are freely movable due to the that they are filled with fluid in its synovial cavity. And so, it is known as freely movable joints. Fibrous joints are fixed in behaviour and cartilaginous joints are neither fixed nor freely movable, they are slightly movable in nature.

Now let us find solution from given option:
A)Synarthrosis : These are also called immovable joints. These are present in skull structures and also between the teeth and mandible.
B)Hinge joint : In these kinds of joints only back and forth movement is seen and is a kind of synovial joint. Example- ankle, knee, and elbows.
C)Gliding joint : It is also termed as a planar joint and a common type of synovial joint. These joints need two or more bones that may be round or flat to move together freely. Examples are the lower leg to the ankle joint and the forearm to the wrist joint.
D)None of the above : as one of the options is correct , this cannot be correct.

Hence, the correct answer is option (A)

Note: Synovial joints are also termed as movable joints. These joints are needed for running, walking, typing, etc. These joints are the most occurring joint as they are responsible for a wide variety of movements in the body. These are very flexible joints.