Which of the following substances is NOT a component of the osteoid material secreted by the cells indicated by the arrow in panel A?

collagen
glycoprotein
proteoglycan
calcium

Respuesta :

Explanation:

Calcium

Osteoids comprise, significant sections of the entire bone matrix, and  this includes fibers of collagen which give bone its flexibility and mechanical strength this allows born to resist stretching and twisting forces.

Osteoblasts are highly specialized cells which formulate new bone through the production or secretion of parts of the organic matrix; this is referred to as the osteoid and mediate the calcification (fortification with allium) of osteoid during the formation of mature bone matrix.

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