If the demand for calcium needed to produce egg shells regularly exceeds the
level of calcium intake, egg-laying birds may replace all of their medullary bone to meet that demand.

Question

If the demand for calcium needed to produce egg shells regularly exceeds the
 level of calcium intake, egg-laying birds may replace all of their medullary bone to meet that demand.

Quizplus · Accepted Answer

Birds have a specialized type of bone called medullary bone that serves as a calcium reservoir. When dietary calcium is insufficient, they can mobilize calcium from this bone to produce eggshells.

If the Demand for Calcium Needed to Produce Egg Shells