Final Answer:
Pubertal growth occurs at Tanner Stage II - III in adolescents.
Step-by-step explanation:
During puberty, the Tanner Staging System is used to categorize the development of secondary sexual characteristics in adolescents. Tanner Stage II typically marks the onset of pubertal growth, with physical changes like the enlargement of the testes in males or breast budding in females. This stage is characterized by the growth spurt, which occurs approximately two years after the onset of puberty. Tanner Stage III follows shortly after, signifying further development in secondary sexual characteristics and continued growth in height and body composition.
Pubertal growth, particularly in terms of height, is a result of the increased secretion of growth hormone and sex hormones like estrogen and testosterone. On average, during Tanner Stage II-III, adolescents can experience a growth spurt ranging from around 8 to 10 centimeters per year. This rapid growth is due to the fusion of growth plates in the long bones, leading to an increase in height.
Understanding the Tanner Stages aids in assessing an individual's pubertal development and growth patterns. By identifying the stage, healthcare professionals can anticipate the changes occurring during this critical phase of development and provide appropriate guidance and support. It's important to note that while Tanner Stages provide a general framework for pubertal development, variations in growth patterns among individuals can exist due to genetic factors, nutrition, and overall health.