Chapter 6 Quiz: Bone Tissue and the Skeletal System
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Figure 6-1 The Structure of Compact Bone
Use Figure 6-1 to answer the following questions:
Which structure is characteristic of spongy bone?
Use Figure 6-1 to answer the following questions:
Which structure is characteristic of spongy bone?
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Suppose that epiphyseal lines appear in a 10-year-old's long bones. Which of the following statements is, therefore, true?
The epiphyseal plates have ossified and further growth in length is not possible.
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________ account(s) for almost two-thirds of the weight of bone.
Calcium phosphate
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The lining of the medullary cavity is called the
endosteum
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The carpal bones are examples of ________ bones.
short
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Bone growth in length occurs by mitosis of
cartilage cells in the epiphyseal side of the metaphysis.
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Which of the following bones is classified as "irregular" in shape?
vertebra
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A large proximal projection on a bone is called the
trochanter
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Where in the body does the production of precursors for the synthesis of calcitriol occur?
skin
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A child with rickets often has
bowed legs
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Which of the following labels best matches osteocyte?
mature bone cell
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After a fracture of the diaphysis has healed, the thickened region that results is called the
external callus.
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The following are important steps in the process of endochondral ossification. What is the correct order for these events?
1. Enlarged chondrocytes die.
2. Osteoblasts replace calcified cartilage with spongy bone.
3. Chondrocytes enlarge and the surrounding matrix begins to calcify.
4. Blood vessels grow around the edges of the cartilage.
5. Perichondrial cells become osteoblasts and produce a superficial layer of bone.
1. Enlarged chondrocytes die.
2. Osteoblasts replace calcified cartilage with spongy bone.
3. Chondrocytes enlarge and the surrounding matrix begins to calcify.
4. Blood vessels grow around the edges of the cartilage.
5. Perichondrial cells become osteoblasts and produce a superficial layer of bone.
3, 1, 4, 5, 2
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What is the correct sequence of steps in bone repair?
1. Cartilage in the external callus is replaced by bone.
2. A hematoma occurs.
3. An internal callus forms at the site of injury.
4. Osteoclasts and osteoblasts remodel the bone at the site of repair.
1. Cartilage in the external callus is replaced by bone.
2. A hematoma occurs.
3. An internal callus forms at the site of injury.
4. Osteoclasts and osteoblasts remodel the bone at the site of repair.
2, 3, 1, 4
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Which of following is a function of the skeletal system?
All of the answers are correct. storage of inorganic salts, protection of vital organs, locomotion, support