Open Question
Some individuals have an abnormally small and shallow glenoid labrum. How would this affect the stability of the shoulder joint?
8. Joints
Joint Movements
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What type of motion occurs at a synovial joint when one flat bone surface slips over another without appreciable angulation or rotation?
A
gliding of ribs on the articular facet of a vertebra
B
rotation of the shoulder
C
flexion of the elbow
D
opposition of the fingers
Verified step by step guidance1
Understand the types of movements that occur at synovial joints: gliding, angular movements, rotation, and special movements.
Identify the characteristics of gliding movements: they occur when flat bone surfaces slide over each other without significant angulation or rotation.
Consider the examples of gliding movements: these typically occur in plane joints, such as the intercarpal joints of the wrist or the intertarsal joints of the foot.
Analyze the given options: 'gliding of ribs on the articular facet of a vertebra' involves a sliding motion, which matches the description of gliding.
Conclude that the correct type of motion described in the problem is gliding, as it involves slipping of flat bone surfaces over each other without appreciable angulation or rotation.
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