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What is the type of ossification that forms the flat bones of the skull?


A) intramembranous ossification
B) endochondral ossification

C) A) and B)
D) undefined

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Which of the following events occurs last in intramembranous ossification?


A) Cancellous bone is formed.
B) Periosteum is formed.
C) Many tiny trabeculae of woven bone develop.
D) A membrane of delicate collagen fibers develops.
E) Osteoprogenitor cells become osteoblasts.

F) B) and C)
G) A) and D)

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A boy grew rapidly and reached a height of 6'2" by the time he was 13.He had normal body proportions and sexual development was only slightly retarded.Which of the following caused his condition?


A) elevated vitamin D synthesis
B) hypersecretion of growth hormone
C) hypersecretion of testosterone
D) hyposecretion of growth hormone
E) an adrenal tumor that secretes androgens

F) B) and C)
G) D) and E)

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The most common bone disease is osteoporosis.The most common consequence of this disease is


A) luxations and subluxations.
B) fractures.
C) fusion of bones.
D) bone thickening.
E) remodeling of bone.

F) C) and D)
G) B) and D)

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