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Related Concept Videos

Signs of Puberty01:27

Signs of Puberty

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Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
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Menopause01:28

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Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
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Hormonal Regulation of the Menstrual Cycle01:22

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The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
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Hormonal Control of the Ovarian Cycle01:30

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The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
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Abnormal Proliferation02:23

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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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Hormonal Regulation01:33

Hormonal Regulation

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The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
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Related Experiment Video

Updated: Jan 18, 2026

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Abnormal Puberty and Amenorrhea: A Review.

Akanksha Garg1, Alla Vash-Margita1, Michael K Simoni2

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Summary

This review covers precocious puberty, delayed puberty, and amenorrhea in females. Early diagnosis and individualized treatment are crucial for optimal growth and development.

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Area of Science:

  • Pediatric Endocrinology
  • Reproductive Health
  • Developmental Biology

Background:

  • Normal puberty onset in females is between 8 and 13 years.
  • Precocious puberty occurs before age 8, while delayed puberty extends beyond expected ranges.
  • Amenorrhea, the absence of menses, can be primary or secondary, with diverse etiologies.

Purpose of the Study:

  • To review the epidemiology, causes, and clinical assessments of precocious and delayed puberty.
  • To explore management strategies for primary and secondary amenorrhea.
  • To emphasize individualized care for optimizing growth, development, and psychosocial outcomes.

Main Methods:

  • Literature review of epidemiological data.
  • Analysis of diagnostic criteria and clinical assessment tools.
  • Synthesis of current management guidelines and therapeutic approaches.

Main Results:

  • Precocious puberty and delayed puberty have distinct central and peripheral causes.
  • Hypogonadism is a common cause of delayed puberty.
  • Amenorrhea can result from genetic factors or hormonal imbalances.

Conclusions:

  • Individualized diagnostic and therapeutic approaches are essential for managing pubertal disorders.
  • Timely intervention is critical for addressing potential impacts on growth and psychosocial well-being.
  • Further research into the long-term outcomes of these conditions is warranted.