GROSS ANATOMY

Detailed explanation-1: -In the elbow example, the forearm moves in the sagittal plane of motion as the elbow joint (through which the axis of rotation occurs) flexes and extends. That is, the arm moves in the sagittal plane of motion around an axis of rotation that occurs at the elbow, which allows for flexion and extension.

Detailed explanation-2: -The elbow moves in the sagittal plane into both flexion and extension. This is about the mediolateral axis and is the only plane that the elbow can move.

Detailed explanation-3: -The sagittal plane lies vertically and divides the body into right and left parts. Forward and backward movements fall into this plane (flexion, extension). The frontal plane also lies vertically but divides the body into anterior and posterior parts.

Detailed explanation-4: -Sagittal plane motion would include forward and backward motions, like sit-ups, back extensions or biceps curls. The sagittal plane cuts through the center of the body, so the motion is front to back or back to front, including straight forward running.

Detailed explanation-5: -Flexion is the movement of a joint, like a knee or elbow, where the bones attached to the joint become closer to each other as the angle between them decreases. Bending the elbow where the hand comes closer to the shoulder would be considered flexion.