MUSCLE PHYSIOLOGY

Detailed explanation-1: -This pair of actions occurs about a transverse axis through a joint. The movement at a joint which decreases the angle between two adjacent body segments is know as flexion. The opposite action is extension, where the angle between body segments is increased.

Detailed explanation-2: -Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow or moving the wrist to move the hand toward the forearm are examples of flexion. Extension is the opposite of flexion in that the angle between the bones of a joint increases.

Detailed explanation-3: -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-4: -Flexion is a movement that causes the angle between the bones of a joint to decrease, such as when a person bends their elbow joint. Flexion movements occur in the sagittal plane (cuts the body into a left and right side) about the frontal axis (horizontal line that passes through the body from right to left).