_____ can actually prevent one from reaching an average adult height.
A. premature puberty
B. excessive deposition of calcium
C. too much growth hormone
D. too many protein-digesting enzymes
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What are the functions of the skeletal system?
A. protection
B. support
C. mineral storage
D. blood cell production
when it comes to the protection of skeletal system, which are the following statements CORRECT?
A. cranial bones protect the brain
B. vertebrae protects the spinal cord
C. sternum protects the heart and lungs
D. pelvis protects the internal reproductive organs
_____ and _____ are principal minerals that are stored in bones.
A. manganese
B. calcium
C. phosphorus
D. magnesium
On the basis of shape, almost all the bones may be classified into four main types: _____, _____, _____, and _____.
A. long
B. short
C. irregular
D. flat