What effect happens when osteoblasts in the inner layer of the periosteum lay down bony cartilage in the diaphysis?
a. bone becomes brittle
b. bone becomes hollow
(c. is wrong)
d. bone becomes thicker

Why is the first step in responding to life-threading situations to assess the situation?

The nutrient facts label on a food package lists the following: iron 50%. what does this figure indicate?

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.