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Question

Number of bones in cranium, face, hyoid and middle ear are respectively

A
14, 8, 1 and 3
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B
8, 14, 1 and 3
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C
3, 8, 14 and 1
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D
14, 8, 3 and 1
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E
8, 3, 14 and 1
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Solution

The correct option is A 8, 14, 1 and 3
  • The skull is composed of 2 sets of bones. They are cranial (8) and facial (14), that totals to 22 bones.
  • Cranium is composed of 8 bones. They are 1 ethmoid bone, 1 frontal bone, 1 occipital bone, 2 parietal bone, 1 sphenoid bone, 2 temporal bones.
  • Facial bones are 14 in number. They are Inferior nasal concha (2), lacrimal bones (2), mandible, maxilla (2), nasal bones (2), palatine bones (2), vomer, zygomatic bones (2).
  • A single U-shaped bone which is present at the base of the buccal cavity is called as hyoid bone.
  • Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear, and the inner ear. The middle ear contains three ossicles called malleus, incus and stapes which are attached to one another in a chain like fashion and send signals from the outer ear to inner ear. Hence the number of bones in the middle ear is three.
  • Hence number of bones in the cranium, face, hyoid and middle ear are 8, 14, 1 and 3 respectively.
  • So, the correct answer is '8, 14, 1 and 3'.

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