Question

Immovable joints are found in
A. Arms
B. Legs
C. Vertebral column
D. Skull

Answer 1

Hint: Immovable joints include sutures, the articulations between the teeth and the mandible, and the joint present between the first pair of ribs and the sternum. These joints are immovable in nature.

Complete answer: Fibrous joints are also called fixed or immovable joints. These joints are connected by dense connective tissues consisting mainly of collagen. These joints are called immovable joints because they do not move. Fibrous joints called sutures are joints present in the skull. After birth, these joints slowly begin to fuse and become fixed, making the skull bones immovable and thereby, protecting the brain from any physical stress.
a) The elbow joint and the wrist joint is otherwise known as the radiocarpal joint. These are the major bones present in the arms and are movable.
b) The knee joint is the joint present in the leg and is formed by the articulations between the medial and lateral condyles of the femur, and the medial and lateral condyles of the tibia. These joints are also movable.
c) Zygapophysial joints often called facet joints. These are joints present in the vertebral column. These are plane synovial joints located between the articular facet processes of the vertebral arch which is a free guided movable joint.
Hence, the correct answer is option D.

Note: Fibrous, cartilaginous, and synovial joints are three major joints. The shape of the joint affects the type of movement permitted by the joint. The joint present between the teeth and their sockets is called gomphosis. It allows a very little movement.