Question

1. What is another important (non-dietary) source of vitamin D?

2. Blood calcium levels are tightly controlled. Discuss the regulation of calcium balance, including the role of Vitamin D and other hormones, the organs, glands involved and the main calcium storage site, the bones.

3 In general, what are the predominant sources of sodium in the population

4. What is another important (non-dietary) source of vitamin D?

Answer 1

Question

1. The sunlight is the important non-dietary source of vitamin D.

2. The bones are ultimate storage for the calcium. When the blood calcium level decreases the bones releases some calcium in the blood and when blood have too much calcium it get deposited in the bones. This process of regulation of calcium is regulated by two hormones that are parathyroid and calcitonin. The parathyroid hormone secreted by parathyroid gland increases blood calcium level and calcitonin hormone decreases blood calcium level and secreted by thyroid gland.

The calcium and vitamin D both work together to protect the bones. Calcium help to build healthy bone where's vitamin D help to absorb calcium from blood.

3. The sources of sodium are:

Spinach, table salt, sea vegetables, pickles, milk.

4. The sunlight is important non-dietary source of vitamin D.