Page 32 - The Cell in 40 Topics
P. 32

The Cell in 40 Topics



























                                Figure 19.
                                When the level of calcium
                                in the blood falls, the
                                parathyroid immediately
                                intervenes by releasing
                                parathormone.




























               Figure 20.
               Parathormone increases the level
               of calcium in the blood in three dif-
               ferent ways.





                                               30
   27   28   29   30   31   32   33   34   35   36   37