MUSCLE PHYSIOLOGY

Detailed explanation-1: -In the limbs, flexion decreases the angle between the bones (bending of the joint), while extension increases the angle and straightens the joint. For the upper limb, all anterior-going motions are flexion and all posterior-going motions are extension.

Detailed explanation-2: -Answer and Explanation: The type of joint movement that increases the angle between the bones is called extension.

Detailed explanation-3: -Flexion and Extension For the vertebral column, flexion (anterior flexion) is an anterior (forward) bending of the neck or body, while extension involves a posterior-directed motion, such as straightening from a flexed position or bending backward.