Of the total inorganic components in bone, calcium accounts for what percent?
A) 17%
B) 9.7%
C) 39%
D) 72%
E) 0.72%
C
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Depression of the immune system due to chronic stress may cause:
depression of the inflammatory response a reduction in the activities and numbers of phagocytes in peripheral tissues the inhibition of interleukin secretion A, B, and C are correct None of the choices are correct
What bone-associated structure in panel C is indicated by the arrow?
osteon epiphyseal plate periosteum trabeculae
Which of the following is a function of the vertebral column?
A. It allows spinal nerves to exit the spinal cord. B. It protects the brain. C. It contains numerous foramina for the passageway of blood vessels. D. It supports the weight of the body. E. It serves as a passageway for the cranial nerves.
Arrange the following from largest to smallest: (1) nucleus (2) DNA molecule (3) skin cell (4) chicken eggs
A. 1, 2, 3, 4 B. 4, 2, 3, 1 C. 4, 3, 1, 2 D. 3, 4, 2, 1 E. 2, 3, 1, 4