This type of joint allows a turning motion where one bone rotates over another.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Study for the Muscular System and Skeletal System Exam. Learn with flashcards and multiple choice questions, where each question has explanations and hints. Be well-prepared and confident on your test day!

Multiple Choice

This type of joint allows a turning motion where one bone rotates over another.

Explanation:
Pivot joints enable turning motions because one bone can rotate around another along a single axis. This setup is what lets the head turn or a forearm twist—the atlas rotating around the dens of the axis, or the radius rotating within the ulna at the proximal radioulnar joint. The other options don’t produce that single-axis rotation: a fixed joint is immovable; the cranium is a skull bone, not a joint; and the jaw (mandible) forms a hinge and some gliding joints, mainly for opening, closing, and limited side-to-side movement, not the pure rotation seen in pivot joints.

Pivot joints enable turning motions because one bone can rotate around another along a single axis. This setup is what lets the head turn or a forearm twist—the atlas rotating around the dens of the axis, or the radius rotating within the ulna at the proximal radioulnar joint. The other options don’t produce that single-axis rotation: a fixed joint is immovable; the cranium is a skull bone, not a joint; and the jaw (mandible) forms a hinge and some gliding joints, mainly for opening, closing, and limited side-to-side movement, not the pure rotation seen in pivot joints.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy