Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?
A) parathyroid hormone
B) calcium
C) growth hormone
D) thyroid hormone

Question

Quizplus · Accepted Answer

Growth hormone is the most important stimulus for epiphyseal plate activity during infancy and childhood. It stimulates the synthesis of insulin-like growth factor 1 (IGF-1), which promotes chondrocyte proliferation and matrix synthesis in the epiphyseal plate, leading to bone growth. Parathyroid hormone and calcium are important for bone remodeling and mineralization, but do not directly stimulate epiphyseal plate activity. Thyroid hormone also plays a role in bone development, but is not the most important stimulus for epiphyseal plate activity during infancy and childhood.

Which of the Following Is the Single Most Important Stimulus