Answer: fibrous periosteum
<span>The diaphysis is the main shaft of a long bone which is made up of cortical bone which contains bone marrow and fats. It is covered by a fibrous connective tissue called the fibrous periosteum. The cells in this layer are densely packed and contain blood vessels, nerve endings and lymphatic. </span>
Consuming every subgroup every day is not necessary
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-Payshence
"Different substances sometimes have the same chemical formula, such as glucose and fructose, but they have different components so they act differently."
