Bending the head backwards or moving the upper arm behind the vertical plane of the body are examples of
A) flexion
B) extension
C) protraction
D) eversion
E) hyperextension

Question

Quizplus · Accepted Answer

Bending the head backwards or moving the upper arm behind the vertical plane of the body both involve moving a joint beyond its neutral position, which is known as hyperextension. Option A, flexion, involves a joint movement in which the angle between two bones decreases. Option B, extension, involves a joint movement in which the angle between two bones increases. Option C, protraction, involves moving a body part forward, away from the midline of the body. Option D, eversion, involves turning a body part outward or away from the midline of the body. Neither of these options applies to the given examples.

Bending the Head Backwards or Moving the Upper Arm Behind