Since it is a light-absorbing pigment, chlorophyll is called a photoreceptor. Also note that there are two types of chlorophyll: chlorophyll a and chlorophyll b. Function. Chlorophyll molecules are contained inside chloroplasts, which are the food producers of the cell found
Calcitonin has an opposite effect, as it decreases the levels of calcium in the blood. Overall, PTH has a strong effect on the blood concentration of calcium, whereas calcitonin has a more moderate effect and is not critical in helping the body maintain normal blood calcium levels.
Parathyroid hormone (PTH), released by the parathyroid gland; and calcitonin, released by the thyroid gland, control the levels of phosphorus in the body. Most of the phosphor â¦ us in the body is stored in the form of phosphate (PO4) attached to calcium in the skeletal systems to form calcium phosphate [Ca3(PO4)2].