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Anatomy and Physiology Skeletal System › View

Which of the following steps of intramembranous ossification is correct ?

1. clusters of oestoblasts from oestoid that becomes mineralized
2. oesteoblasts differentiate within mesenchymal connective tissue
3. spicules of bone radiate out from the ossification centers
4. mesenchymal cells aggregate

A. 4,1,2,3

B. 1,2,4,3

C. 4,2,1,3

D. 4,3,2,1

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Pathogens › View

Which of the following statements about pathogens is true?

A. A pathogen describes anything that causes illness or disease

B. Pathogens are all microscopic

C. All pathogens are transmitted through the air from host to host

D. All pathogens cause cells to swell and burst

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