Question

When the angle of a joint increases, it produces movement. Which type of movement is it? A. extension B. rotation C. flexion D. revolution

Answer 1

Correct answer: A) Extension

Extension is a physical position that occurs when angle between the bones and the limbs of joint increases.

It takes place when there is a contraction of muscles and bones move the joint from a bent to a straight position, it is opposite of flexion, in which the angle between the bones and the limb at the joint decreases.

Example: During straightening of the leg, the angle between the tibia and femur increases, which shows extension has taken place.

Answer 2

When the angle of a joint increases, it produces movement, this type of movement refers to A. extension. Extension pertains to the  fact of reaching, stretching, or continuing or addition of something. Extension of joints is helpful in playing with sports or stretching.