Question

Growth of bones is controlled by a symphony of hormones. which hormone is of greatest importance for bone growth during infancy and childhood?

Answer 1

Growth hormone (GH) is the most important hormone for bone growth during infancy and childhood, aiding in the proliferation of chondrocytes in epiphyseal plates, enhancing mineralization, and stimulating osteoblastic activity.

Step-by-step explanation:

The hormone of greatest importance for bone growth during infancy and childhood is growth hormone (GH). Secreted by the pituitary gland, GH stimulates bone growth by triggering chondrocyte proliferation in the epiphyseal plates, thus increasing the length of long bones. It also enhances mineralization through increased calcium retention and stimulates osteoblastic activity to improve bone density.

Other hormones such as thyroxine, secreted by the thyroid gland, and the sex hormones estrogen and testosterone, which come into play during puberty, also contribute to bone growth and matrix maintenance. Additionally, calcitriol, the active form of vitamin D produced by the kidneys, is essential for the absorption of calcium and phosphate, which are crucial for bone growth and health.

Answer 2

The Growth hormone (GH) is of greatest importance in human development. It is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans. GH is produced by the pituitary gland, and it also helps to regulate body composition, body fluids, and muscle and bone growth.