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Multiple Choice
Which of the following are examples of hinge joints?
A
Shoulder and hip
B
Skull sutures
C
Wrist and ankle
D
Elbow and knee
Verified step by step guidance
1
Understand the definition of a hinge joint: A hinge joint is a type of synovial joint that allows movement in one plane, similar to the motion of a door hinge. This type of joint permits flexion and extension.
Identify the characteristics of hinge joints: They are uniaxial, meaning they allow movement primarily in one axis. This is typically flexion and extension, such as bending and straightening.
Consider the examples provided: Shoulder and hip, Skull sutures, Wrist and ankle, Elbow and knee.
Analyze each example: The shoulder and hip are ball-and-socket joints, allowing multi-directional movement and rotation. Skull sutures are fibrous joints that do not allow movement. The wrist and ankle are complex joints allowing more than just hinge-like movement.
Conclude with the correct examples: The elbow and knee are classic examples of hinge joints, as they primarily allow flexion and extension movements.