Question

what is the functional classification of the shoulder joint?
answers: a - e
a cartilaginous
b synarthrosis
c synovial joint
d diarthrosis
e amphiarthrosis

Explanation:

• Cartilaginous (A): Joints where bones are connected by cartilage. Not the functional classification here.
• Synarthrosis (B): Immovable joints. The shoulder is movable.
• Synovial joint (C): Structural classification (based on joint structure, not function).
• Diarthrosis (D): Functional classification for freely movable joints. The shoulder joint allows a wide range of motion (e.g., flexion, extension, abduction, adduction, rotation), so it is a diarthrosis.
• Amphiarthrosis (E): Slightly movable joints. The shoulder is more than slightly movable.

Answer:

D. Diarthrosis