1) Callus: a) is found in endochondral areas of the long bone b) Is present in f
ID: 44649 • Letter: 1
Question
1) Callus:
a) is found in endochondral areas of the long bone
b) Is present in fetal bone
c) Is a result of bone fracture
d) Is a weak form of bone
e) Is unmineralized bone
2) Muscle A and muscle B are the same size, but muscle A is capable of finer control than muscle B. Which is true of muscle A?
a) it is controlled by more neurons than muscle B
b) it contains fewer motor units than muscle B
c) It is controlled by fewer neurons than muscle B
d) It has larger sarcomeres than muscle B
e) Each of its motor units consists of more cells than the motor units of muscle B.
Explanation / Answer
Answer:
1)c) Is a result of bone fracture
Callus is formed during healing of the fractured bone.Osteoblasts are the units of bone in the periosteum proliferate rapidly leading to formation of collars around the ends of the fracture.
2)e) Each of its motor units consists of more cells than the motor units of muscle B.
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