Irregular bones are bones of _____.
A. vertebrae
B. face
C. thorax
D. pelvis
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______ are the additional types of bones that are not included in classification by shapes.
A. sutural bones
B. wormian bones
C. sesamoid bones
D. collar bones
The following statements , _____, illustrate the functions of calcium.
A. nerve cells need calcium for nerve impulse conduction
B. muscle needs calcium to contract
C. blood needs calcium to clot
D. bone needs calcium to make itself hard
If the hemostasis maintained between the action of osteoblasts and osteoclasts is broken, what might happen?
A. The surplus of calcium in the bone may form spurs.
B. A loss of too much calcium weakens the bones.
C. A loss of too much calcium might cause the bone to break easily
D. if bone loses two much tissue, it may become very flexible.
What are the influential factors that affect normal bone growth?
A. hormones
B. minerals
C. vitamins
D. enzymes
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