Question at position 13 A uniaxial joint allows for movement in two planes.TrueFalseSingle choice
A
True
B
False

Question

Question at position 13 A uniaxial joint allows for movement in two planes.TrueFalse

BlackTom AI · Accepted Answer

Examining the concept of uniaxial joints and the planes of movement involved, we should assess each option carefully.
Option 1: 'True' — If a joint were uniaxial and able to move in two planes, that would contradict the definition of uniaxial movement. Uniaxial joints are characterized by movement around a single axis, typically allowing motion in one plane such as flexion and extension. Claiming movement in two planes would align more with a biaxial or triaxial joint, not a uniaxial one, making this option inconsistent with the standard anatomical classification.
Option 2: 'False' — This statement correctly reflects the idea that a uniaxial joint does not permit movement in two planes. The classic example is a hinge joint (like the elbow or knee) that moves predominantly in one plane (sagittal plane) around a single axis, enabling flexion and extension but not abduction/adduction or rotation in multiple planes. The key misconception to avoid here is thinking uniaxial joints have multi-planar freedom when they do not.
To reinforce the contrast, it can help to recall other joint types: biaxial joints (such as the wrist) allow motion in two planes, and multiaxial joints permit movement in three or more planes. The statement being evaluated asserts two-plane movement for a uniaxial joint, which conflicts with the defining characteristic of uniaxial joints as moving around one axis in one plane.
In summary, the idea that a uniaxial joint moves in two planes is not consistent with anatomical terminology, whereas stating that it does move in a single plane aligns with the uniaxial designation.

Question at position 13 A uniaxial joint allows for movement in two planes.TrueFalseSingle choice

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