The mechanisms of action of growth hormone (GH) and insulin-like growth factors (IGFs) are:
1. Stimulation of protein synthesis in cells
2. Promotion of cell division and proliferation
3. Stimulation of lipolysis (breakdown of fat) and inhibition of glucose uptake in adipose tissue
So the correct options are:
Stimulation of protein synthesis in cells
Promotion of cell division and proliferation
Step-by-step explanation:
GH and IGFs act on specific receptors in cells to stimulate the synthesis of proteins, which leads to cell growth and division. They also promote the differentiation of cells into specialized tissues, such as bone and muscle. Additionally, they have an effect on metabolism, promoting the breakdown of fats and inhibiting the uptake of glucose by adipose tissue. These mechanisms of action play important roles in growth and development during childhood and adolescence, as well as in maintaining tissue health and repair throughout life.