EVERYDAY SCIENCE

Detailed explanation-1: -Pivot joints are joints that permit rotatory movement of bones, around a single axis. Pivot joint is a synovial joint in which the ends of two bones connect. In this joint, a cylinder-shaped bone rotates inside another ligament that forms a ring around the joint.

Detailed explanation-2: -pivot joint, also called rotary joint, or trochoid joint, in vertebrate anatomy, a freely moveable joint (diarthrosis) that allows only rotary movement around a single axis. The moving bone rotates within a ring that is formed from a second bone and adjoining ligament.

Detailed explanation-3: -plane joint, also called gliding joint or arthrodial joint, in anatomy, type of structure in the body formed between two bones in which the articular, or free, surfaces of the bones are flat or nearly flat, enabling the bones to slide over each other.

Detailed explanation-4: -Synovial joints allow for free movement between the bones and are the most common joints of the body.

Detailed explanation-5: -Pivot joints hold the two bones of the forearm together. That is, a pivot joint, located near the elbow, joins the bones of the forearm (called the ulna and the radius) to each other.