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During bone formation,calcium phosphate and calcium hydroxide interact to form crystals of _________,which serve to harden the matrix.

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Neither short nor flat bones contain a medullary cavity.

A) True
B) False

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The formation of bone from a cartilaginous model is termed


A) mesenchymal ossification.
B) intramembranous ossification.
C) bone remodeling.
D) orthodontia.
E) endochondral ossification.

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

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  -This figure shows the anatomy of compact bone.Which number is referring to a perforating (or Volkmann's) canal  A) 1 B) 2 C) 3 D) 4 E) 5 -This figure shows the anatomy of compact bone.Which number is referring to a perforating (or Volkmann's) canal


A) 1
B) 2
C) 3
D) 4
E) 5

F) A) and D)
G) None of the above

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Which is not true about the periosteum


A) It includes two layers: outer fibrous and inner cellular.
B) It is composed of dense regular connective tissue.
C) It provides stem cells for bone growth and repair.
D) It is anchored to the bone by collagen fibers.
E) It covers the entire bone surface,with the exception of articular areas.

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

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In adults,an area of compact bone called the epiphyseal tract replaces the epiphyseal plate.

A) True
B) False

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Which sex tends to lose more bone mass with aging


A) Women
B) Men

C) A) and B)
D) undefined

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Consider the classifications of bone,and examples of each.Which classification comprises bones used primarily for movement rather than protection


A) Short bones
B) Long bones
C) Flat bones
D) Irregular bones
E) Regular bones

F) None of the above
G) A) and C)

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Bone cells called __________ break down bone by secreting hydrochloric acid and enzymes that dissolve the matrix.


A) osteoprogenitor cells
B) osteoid cells
C) osteocytes
D) osteoclasts
E) osteoblasts

F) None of the above
G) B) and E)

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Further lengthwise bone growth cannot occur once the epiphyseal lines have formed.

A) True
B) False

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To trigger bone growth,growth hormone stimulates the


A) liver to produce somatomedin.
B) liver to produce calcitonin.
C) brain to produce serotonin.
D) parathyroid to produce parathyroid hormone.
E) thyroid to produce calcitriol.

F) A) and D)
G) D) and E)

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Chondrocytes occupy spaces in the matrix called _________.

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Which choice places the steps of intramembranous ossification in correct chronological order A: Formation of lamellar bone B: Osteoid undergoes calcification C: Ossification centers form D: Formation of woven bone and its periosteum


A) b - a - c - d
B) c - b - d - a
C) c - b - a - d
D) a - c - d - b
E) b - c - d - a

F) A) and E)
G) A) and B)

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Endochondral ossification is a form of bone growth in which a cartilaginous model is replaced by bone.

A) True
B) False

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Severe anemia may trigger an adaptive conversion of


A) yellow marrow to red marrow.
B) red marrow to yellow marrow.
C) spongy bone to compact bone.
D) bone marrow to spongy bone.

E) A) and C)
F) A) and D)

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  -This figure illustrates the microscopic anatomy of spongy bone.Which is a mature bone cell A) 1 B) 2 C) 3 D) 4 E) None of the choices is correct. -This figure illustrates the microscopic anatomy of spongy bone.Which is a mature bone cell


A) 1
B) 2
C) 3
D) 4
E) None of the choices is correct.

F) A) and E)
G) A) and D)

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