O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2013 · Q211 Mark

Which row describes the shoulder joint of an arm?

Aradius ulna ball and socket flexion and extension

Bscapula humerus ball and socket rotation

Cradius ulna hinge rotation and extension

Dscapula humerus hinge flexion and extension

✓ Correct answer

B: scapula humerus ball and socket rotation

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2013 Paper 1 Variant 1, question 21.

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