Praxis 5857 Practice Question
The type of joint responsible for movement of the elbows and knees is called a
Correct Answer: B
Rationale: The hinge joint allows for movement in one direction, similar to a door, enabling the bending and straightening of limbs, which is essential for the functioning of the elbows and knees.
Option A, the gliding joint, permits limited movement between flat bone surfaces, mainly found in the wrists and ankles, not suitable for the bending motion of elbows and knees.
Option C, the saddle joint, allows for a greater range of motion but is primarily found in the thumb, facilitating grasping rather than the hinge-like movement of the elbow and knee.
Option D, the pivot joint, enables rotational movement, as seen in the neck, but does not support the flexion and extension required in the elbows and knees.
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