How Is Calcium Important to Homeostasis

Multiple Choice

How is calcium important to homeostasis?

A) It plays an important role in the absorption of vitamin D from the digestive tract.
B) It is important for maintaining the proper excitability of nerves and muscles.
C) It stimulates osteoblasts to lay down bone.
D) It plays an important role in the absorption of vitamin D from the digestive tract, and it is important for maintaining the proper excitability of nerves and muscles.
E) It is important for maintaining the proper excitability of nerves and muscles, and it stimulates osteoblasts to lay down bone.