Chapter 35, Problem 33A

Summary Introduction

To write:

The relationship between calcitonin and parathyroid hormone.

Introduction:

Hormones are called the chemical messengers as they are secreted directly in the circulatory system. With the help of blood, the hormones reach the organs and the tissue to maintain their function. There are many types of hormones that are secreted in the body to maintain the processes and function. Thyroxin and triiodothyronine are the two hormones secreted by thyroid glands, insulin, estrogen, progesterone, cortisol, etc.

Explanation of Solution

Calcitonin is produced by the thyroid gland; this hormone is responsible for the regulation of calcium in the body, which is an important mineral for bone health. It is also involved in the maintenance of the blood clotting process, muscular contraction, and nerve function. The calcitonin signals to the bones when there is a decrease in the calcium level to absorb calcium and sends a signal to the kidney to produce more calcium. The calcitonin and parathyroid hormones are interrelated. The calcitonin is involved in maintaining the calcium level inside the blood but when the blood calcium level decreases, the parathyroid hormone is produced.

Conclusion

Thus, it is concluded that whenever there is a reduction in the calcium level inside the bloodstream, the parathyroid hormone is produced to maintain it.