Question

The type of joint between humerus and radius bone is called
A. Gliding joint
B. Saddle joint
C. Pivot joint
D. Hinge joint

Answer 1

Hint: Joints are the arrangement of the tissues due to which bones joined. There are three different types of joints based on mobility- fibrous joints, cartilaginous joints, synovial joints.

Complete answer:
The humerus bone is one of the longest bones in the body of humans. It is a bone present in the upper arm of the skeleton. The radial bone and ulna are present in the lower arm of the body. A joint is an articulation between two bones. There are different joints present in the body.
In option A, the Gliding joint is mentioned. In gliding joints, the bones connected glide against each other in any direction along the plane of the joint. The movements possible are, left and right, up and down, and diagonally. This type of joint is present in wrists and ankles.
In option B, Saddle joint is mentioned. In the saddle joint, one bone of the joint is concave at one end and the other bone’s end is convex. This makes the joint look like a rider in a saddle. This joint is present in the thumbs of the hand.
In option C, Pivot joint is mentioned. In the pivot joint, one bone forms a cylindrical structure and the other bone forms a ring around it. Pivot joints allow rotational movements of bones around a single axis. This type of joint is present just under the skull. This is the joint responsible for skull movement.
In option D, Hinge joint is mentioned. In this type of joint, the movement of the joint occurs only in one axis. This joint is present in elbows and knees. They move only in one direction.

Hence option D is correct.

Note: The hinge joints are affected by many injuries. A few of them are Osteoarthritis, dislocation, and tissue damage. In osteoarthritis, the cartilage around the hinge joint swells. This leads to stiffness and pain. In dislocation, a bone moves from its position. The ligaments, tendons, or any other tissue is damaged causing inflammation leading to pain.