EVERYDAY SCIENCE

Detailed explanation-1: -Extension – straightening a joint. This occurs when the angle of a joint increases, for example the elbow when throwing a shot put. The take-off knee extends when a high-jumper takes off (the other knee is flexed). Ball and socket joints also allow flexion and extension.

Detailed explanation-2: -Extension. The opposite of flexion is extension, which refers to the straightening of a joint. In other words, flexion works to shorten a joint angle while extension works to increases it.

Detailed explanation-3: -In anatomy, extension is a movement of a joint that increases the angle between two bones or body surfaces at a joint. Extension usually results in straightening of the bones or body surfaces involved. For example, extension is produced by extending the flexed (bent) elbow.

Detailed explanation-4: -Condyloid joints: perform flexion, extension, abduction, and adduction movements. Saddle joints: permit the same movement as condyloid joints and combine with them to form compound joints. Ball and socket joints: allow all movements except gliding.

Detailed explanation-5: -Flexion and Extension The opposite of flexion is extension. This involves movement along the sagittal plane that increases the angle between the articulating bones, and typically straightens a flexed limb or body part. Examples include straightening a flexed neck, elbow, or knee.