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Locomotion and Movement — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYLocomotion and Movement1 Mark
MCQ
Which one of the following statements is true?
  • A
    Head of humerus bone articulates with acetabulum of pectoral girdle.
  • B
    Head of humerus bone articulates with the glenoid cavity of pectoral girdle.
  • C
    Head of humerus bone articulates with acetabulum of pelvic girdle.
  • D
    Head of humerus bone articulates with a glenoid cavity of pelvic girdle.
✓

Answer

  1. Head of humerus bone articulates with the glenoid cavity of pectoral girdle.

Explanation:

Each pectoral girdle consists of two bones: 1 clavicle and 1 scapula. At the point where the superior and lateral borders of the scapula meet, there is the lateral angle which presents a shallow articular surface termed as glenoid cavity into which the head of the humerus articulates.

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