Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of ________.
A) osteogenic cells
B) chondrocytes and osteocytes
C) dense irregular connective tissue
D) cartilage and compact bone
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Question 2) What is the structural unit of compact bone?
A) the osteon
B) lamellar bone
C) osseous matrix
D) spongy bone
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Question 3) Which of the following is not a function of the skeletal system?
A) production of blood cells (hematopoiesis)
B) communication
C) storage of minerals
D) support
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Question 4) Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?
A) calcium
B) growth hormone
C) thyroid hormone
D) parathyroid hormone
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Question 5) Which structure allows the diaphysis of the bone to increase in length until early childhood?
A) epiphyseal line
B) lacuna
C) epiphyseal plate
D) osteon
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Question 6) Ossification of the ends of long bones ________.
A) is a characteristic of intramembranous bone formation
B) involves medullary cavity formation
C) takes twice as long as diaphysis ossification
D) is produced by secondary ossification centers
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Question 7) Which of the following is implicated in osteoporosis in older women?
A) estrogen deficiency due to menopause
B) heritage such as African or Mediterranean
C) poor posture
D) abnormal PTH receptors
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Question 8) A fracture in the shaft of a bone would be a break in the ________.
A) metaphysis
B) articular cartilage
C) diaphysis
D) epiphysis
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Question 9) What can a deficiency of growth hormone during bone formation cause?
A) decreased osteoclast activity
B) decreased epiphyseal plate activity
C) increased osteoclast activity
D) inadequate calcification of bone
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Question 10) The cell responsible for secreting the matrix of bone is the ________.
A) osteocyte
B) chondrocyte
C) osteoclast
D) osteoblast
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