Small channels extending through the bone matrix are canaliculi. The correct option is A.
The bone matrix is the component of the bone tissue that makes up the majority of the bone's mass.
It is made up of both inorganic and organic compounds. The organic components of the bone matrix are collagen and ground substance.
While the inorganic components are inorganic bone salts, primarily hydroxyapatite.
The osteocyte's cytoplasmic processes extend away from the cell in small channels called canaliculi toward other osteocytes.
Thus, the correct option is A.
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