Question

The fibrous connective tissue that makes up the outside covering of the diaphysis is the

Answer 1

Answer: fibrous periosteum

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.  

Answer 2

The fibrous connective tissue that makes up the outside covering of the diaphysis is the periosteum.
It is a dense membrane composed of fibrous connective tissue that closely wraps all bone except that of the articulating surfaces in joints, which is covered by a synovial membrane. It serves as an outside covering or protection.