Endocrine Regulation of Growth

Question 1

Endocrine Factors that Influence Growth

Answer 1

• Requires net synthesis of protein
• Lengthening of bones, increased size and number of cells in soft tissue
• GH and IGF-1
  
  • *GH is the most important regulator of postnatal growth
  • *GH has both growth-promoting and metabolic effects
• Insulin
• Thyroid hormones (T₃ and T₄)
• Sex steroids (estrogen and testosterone)
• Glucocoricoids

Question 2

Non-Endocrine Factors that Influence Growth

Answer 2

• Genetics
• Socioeconomic
• Nutritional
• Psychological
• Chronic Disease