Which of the following statements is true of the pubertal growth spurt?

• A. It is independent of hormonal regulation.
• B. It is primarily driven by increased secretion of growth hormone and sex steroids.
• C. It results in the closure of the neural tube.
• D. It occurs at the same age in both males and females.

Answer: (B)

Verified step by step guidance

1. Understand the concept of the pubertal growth spurt: It is a period of rapid physical growth during puberty, driven by hormonal changes.
2. Recall the role of hormones in the pubertal growth spurt: Growth hormone and sex steroids (such as estrogen and testosterone) play a key role in stimulating growth during this phase.
3. Eliminate incorrect options: The pubertal growth spurt is not independent of hormonal regulation, as hormones are essential for this process.
4. Analyze the statement about the closure of the neural tube: The neural tube closes during early embryonic development, not during puberty, so this option is incorrect.
5. Consider the timing of the growth spurt: It does not occur at the same age in males and females; typically, females experience it earlier than males.