Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Regulation of Hormone Secretion01:19

Regulation of Hormone Secretion

6.0K
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...
6.0K
Hormonal Regulation01:40

Hormonal Regulation

47.7K
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.
47.7K
Overview of Secretory Vesicles01:33

Overview of Secretory Vesicles

9.3K
Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
9.3K
Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

6.3K
Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
6.3K
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

2.1K
The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
2.1K
Feedback Inhibition00:46

Feedback Inhibition

56.8K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
56.8K

You might also read

Related Articles

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

Sort by
Same author

Glacial isostatic adjustment reveals Mars's interior viscosity structure.

Nature·2025
Same author

Author Correction: Evidence for multi-fragmentation and mass shedding of boulders on rubble-pile binary asteroid system (65803) Didymos.

Nature communications·2024
Same author

Evidence for multi-fragmentation and mass shedding of boulders on rubble-pile binary asteroid system (65803) Didymos.

Nature communications·2024
Same author

Fast boulder fracturing by thermal fatigue detected on stony asteroids.

Nature communications·2024
Same author

Martian CO<sub>2</sub> Ice Observation at High Spectral Resolution With ExoMars/TGO NOMAD.

Journal of geophysical research. Planets·2022
Same author

Organic waste-borne ZnS nanoparticles: The forgotten ones.

Environmental pollution (Barking, Essex : 1987)·2022

Related Experiment Video

Updated: Jan 9, 2026

Regulation of Hormone Secretion
01:19

Regulation of Hormone Secretion

6.0K

An impact-driven dynamo for the early Moon.

M Le Bars1, M A Wieczorek, O Karatekin

  • 1IRPHE, CNRS and Aix-Marseille Université, 49 rue F. Joliot Curie, BP 146, 13384 Marseille Cedex 13, France. lebars@irphe.univ-mrs.fr

Nature
|November 11, 2011
PubMed
Summary
This summary is machine-generated.

Lunar magnetic anomalies may stem from impact-induced core fluid flows. These events altered the Moon's rotation, potentially powering a dynamo and generating magnetic fields consistent with measurements.

More Related Videos

Hormonal Regulation of Digestion
01:40

Hormonal Regulation of Digestion

47.7K
Overview of Secretory Vesicles
01:33

Overview of Secretory Vesicles

9.3K

Related Experiment Videos

Last Updated: Jan 9, 2026

Regulation of Hormone Secretion
01:19

Regulation of Hormone Secretion

6.0K
Hormonal Regulation of Digestion
01:40

Hormonal Regulation of Digestion

47.7K
Overview of Secretory Vesicles
01:33

Overview of Secretory Vesicles

9.3K

Area of Science:

  • Planetary Science
  • Geophysics
  • Lunar Science

Background:

  • The origin of lunar magnetic anomalies remains a long-standing puzzle in planetary science.
  • Existing hypotheses, such as a lunar core dynamo or impact amplification, face significant challenges.
  • Many magnetic anomalies are not spatially correlated with impact basin antipodes.

Purpose of the Study:

  • To propose and investigate a novel model for lunar magnetic field generation.
  • To explain the origin of lunar magnetic anomalies, particularly those not linked to basin antipodes.
  • To reconcile theoretical models with palaeomagnetic measurements of the Moon's ancient magnetic field.

Main Methods:

  • Development of a new theoretical model for dynamo action in the lunar core.
  • Simulation of impact-induced rotational changes and subsequent core fluid dynamics.
  • Analysis of tidal distortion effects on core fluid flows and dynamo generation.
  • Comparison of model predictions with existing palaeomagnetic data.

Main Results:

  • Impact events can unlock the Moon from synchronous rotation, inducing significant core fluid flows.
  • These impact-induced flows, excited by tidal distortion, are capable of powering a lunar dynamo.
  • The model predicts surface magnetic field strengths of several microteslas, aligning with palaeomagnetic evidence.
  • The generated fields possess sufficient duration to account for observed magnetic anomalies near large impact basins.

Conclusions:

  • Impact-induced changes in lunar rotation offer a plausible mechanism for generating ancient lunar magnetic fields.
  • This model provides a unified explanation for magnetic anomalies, including those not associated with basin antipodes.
  • The findings suggest a dynamic early lunar interior influenced by major impact events.