The proximal end of the ulna illustrates the relationship of form and function. The rounded trochlear notch articulates with the hourglass shape of the trochlea. This forms a joint that allows for________ .
A) the hyper extension of the forearm
B) the rotational motion of the forearm
C) the curling of the fingers
D) the hinge like motion of the forearm

Question

Quizplus · Accepted Answer

The hourglass shape of the trochlea and the rounded trochlear notch form a hinge joint that allows for the hinge-like motion of the forearm.

The Proximal End of the Ulna Illustrates the Relationship of Form