a. Osteocytes
b. Osteoblasts
c. Osteoclasts
d. Stem cells from the bone marrow
ANS: B REF: 159
2. What is the chemical transmitter released at the neuromuscular junction?
a. Norepinephrine
b. GABA
c. Serotonin
d. Acetylcholine
ANS: D REF: 161
3. What are the two types of bone tissue?
a. Vascular and nonvascular
b. Spongy and calcified
c. Compact and cancellous
d. Dense and pliable
ANS: C REF: 159
4. Which of the following would identify an open or compound fracture?
,a. The skin and soft tissue are exposed at the fracture site.
b. A bone is crushed into many small pieces.
c. The bone appears bent with a partial fracture line.
d. One end of a bone is forced into an adjacent bone.
ANS: A REF: 164
5. Which of the following describes a Colles’ fracture?
a. The distal radius is broken.
b. The distal fibula is broken.
c. A vertebra appears crushed.
d. A spontaneous fracture occurs in weakened bone.
ANS: A REF: 165
6. During the fracture healing process, the hematoma:
a. is broken down and absorbed immediately.
b. provides the base for bone cells to produce new bone.
c. is the structure into which granulation tissue grows.
d. produces fibroblasts to lay down new cartilage.
ANS: C REF: 166
7. When a fracture is healing, the procallus or fibrocartilaginous callus:
a. can bear weight.
b. serves as a splint across the fracture site.
c. is the tissue that lays down new cartilage.
d. is made up of new bone.
,ANS: B REF: 166
8. The inflammation surrounding a fracture site during the first few days may
complicate healing by causing:
a. excessive bone movement.
b. severe ischemia and tissue necrosis.
c. malunion or nonunion.
d. fat emboli to form.
ANS: B REF: 166-167
9. What is a sign of a dislocation?
a. Crepitus
b. Pain and tenderness
c. Increased range of motion at a joint
d. Deformity at a joint
ANS: D REF: 168
10. All of the following predispose to osteoporosis EXCEPT:
a. weight-bearing activity.
b. a sedentary lifestyle.
c. long-term intake of glucocorticoids.
d. calcium deficit.
ANS: A REF: 169
11. Which of the following statements does NOT apply to osteoporosis?
a. Bone resorption is greater than bone formation.
, b. It causes compression fractures of the vertebrae.
c. Osteoporosis is always a primary disorder.
d. It often leads to kyphosis and loss of height.
ANS: C REF: 169
12. Which of the following best describes the typical bone pain caused by
osteogenic sarcoma?
a. Intermittent, increasing with activity
b. Sharp, increased with joint movement
c. Mild, aching when weight-bearing
d. Steady, severe, and persisting with rest
ANS: D REF: 171
13. How is Duchenne’s muscular dystrophy inherited?
a. Autosomal recessive gene
b. X-linked recessive gene
c. Autosomal dominant gene
d. Codominant gene
ANS: B REF: 172
14. Which of the following is true about Duchenne’s muscular dystrophy?
a. There is difficulty climbing stairs or standing up at 2 to 3 years of age.
b. It involves only the legs and pelvis.
c. Skeletal muscle atrophy can be seen in the legs of a toddler.
d. It cannot be detected in any carriers.
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