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Related Concept Videos

Secondary Messengers in Hormone Action01:26

Secondary Messengers in Hormone Action

Water-soluble hormones cannot cross the plasma membrane, so they rely on protein receptors that span the membrane to trigger intracellular signaling pathways. These pathways then activate second messengers inside the cell, including cAMP or calcium ions.
Many hormones bind to transmembrane G protein-coupled receptors that connect to regulatory G proteins. These G proteins can then activate enzymes such as adenylyl cyclase or phospholipase C. Adenylyl cyclase converts ATP to cAMP, activating...
Regulation of Hormone Secretion01:19

Regulation of Hormone Secretion

Regulation of hormone secretion is a finely tuned orchestration driven by various types of stimuli, encompassing neural, humoral, and hormonal signals. Environmental cues instigate neural stimuli, where action potentials traverse nerve fibers to reach their designated targets. An illustrative scenario is the body's response to stress, wherein the sympathetic nervous system releases epinephrine from the adrenal glands, inducing the well-known 'fight or flight' reaction.
Humoral stimuli,...
Hormonal Regulation01:33

Hormonal Regulation

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.
Hormonal Regulation01:40

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
Plant Hormones01:56

Plant Hormones

Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
Plant Hormones01:56

Plant Hormones

Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.

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Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

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Juvenile Hormone and the Evolution of Insect Metamorphosis.

Integrative and comparative biology·2026
Same author

Regulation of metamorphosis in holometabolous insects.

Current opinion in insect science·2026
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The embryonic role of juvenile hormone in the firebrat, <i>Thermobia domestica,</i> reveals its function before its involvement in metamorphosis.

eLife·2024
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The embryonic role of juvenile hormone in the firebrat, <i>Thermobia domestica</i>, reveals its function before its involvement in metamorphosis.

bioRxiv : the preprint server for biology·2023
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Drosophila postembryonic nervous system development: a model for the endocrine control of development.

Genetics·2023
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<i>Chinmo</i> is the larval member of the molecular trinity that directs <i>Drosophila</i> metamorphosis.

Proceedings of the National Academy of Sciences of the United States of America·2022

Related Experiment Video

Updated: Jul 6, 2026

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System
08:53

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System

Published on: September 6, 2016

Juvenile hormone action: a 2007 perspective.

Lynn M Riddiford1

  • 1Janelia Farm Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, VA 20147, USA. riddifordl@janelia.hhmi.org

Journal of Insect Physiology
|March 22, 2008
PubMed
Summary

Juvenile hormone (JH) regulates insect life history, maintaining larval states and directing reproductive maturation. Recent research offers new insights into JH's larval roles and underlying mechanisms.

Area of Science:

  • Entomology
  • Endocrinology
  • Developmental Biology

Background:

  • Juvenile hormone (JH) is crucial for insect development and reproduction.
  • JH controls key transitions, including larval molting and adult maturation.

Purpose of the Study:

  • To review recent findings on the role of juvenile hormone in insect larvae.
  • To highlight new insights into the mechanisms of JH action during larval stages.

Main Methods:

  • Literature review of studies published within the past year.
  • Synthesis of recent research on juvenile hormone function in insect larvae.

Main Results:

  • Recent studies provide novel perspectives on JH's influence on larval physiology.

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Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster

Published on: April 14, 2017

Methods to Test Endocrine Disruption in Drosophila melanogaster
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Methods to Test Endocrine Disruption in Drosophila melanogaster

Published on: July 3, 2019

Related Experiment Videos

Last Updated: Jul 6, 2026

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System
08:53

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System

Published on: September 6, 2016

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster
12:10

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster

Published on: April 14, 2017

Methods to Test Endocrine Disruption in Drosophila melanogaster
09:43

Methods to Test Endocrine Disruption in Drosophila melanogaster

Published on: July 3, 2019

  • Emerging evidence elucidates specific molecular and cellular pathways regulated by JH in larvae.

    • Conclusions:

    • Juvenile hormone plays a multifaceted role in larval development.
    • Continued research is uncovering the intricate mechanisms governing JH's effects on insect life history.