Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Feedback Inhibition

Feedback Inhibition

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!

Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

Internal Receptors

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.

Inclusive Fitness

Inclusive Fitness

Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.

Cross-reactivity

Cross-reactivity

Contact-dependent Signaling

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...

You might also read

Related Articles

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

Sort by

Same author

Embodied Interoception Questionnaire (Intero-10): Development, Validation, and Application in People With Neuropathic Chronic Pain.

European journal of pain (London, England)·2026

Same author

Correction: Neurological manifestations of SARS-CoV-2 infection: protocol for a sub-analysis of the COVID-19 critical care consortium observational study.

Frontiers in medicine·2026

Same author

Correction: Exploring Cerebrospinal Compensatory Zones Using a Noninvasive Approach.

Neurocritical care·2026

Same author

Longitudinal Multimodal Magnetic Resonance Imaging Reveals Improvement in Verbal Fluency Over Time in Moderate-to-Severe Traumatic Brain Injury.

Neurotrauma reports·2025

Same author

Favorable clinical outcomes and complications of endoscopic third ventriculostomy in Chiari Malformation Type I: A systematic review and meta-analysis.

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia·2025

Same author

Insula Deep Brain Stimulation for Neuropathic Pain: A Cross-Over, Randomized, Sham-Controlled Trial.

Neuromodulation : journal of the International Neuromodulation Society·2025

Search research articles

Related Experiment Video

Updated: Dec 9, 2025

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

The authors reply

Sabrina Araujo de França¹, Wagner M Tavares, Angela S M Salinet

¹Department of Research of IPSPAC-Instituto Paulista de Saúde para Alta Complexidade, Santo Andre, São Paulo, Brazil; Department of Research of IPSPAC-Instituto Paulista de Saúde para Alta Complexidade, Santo Andre, São Paulo, Brazil, and Institute of Neurology, University of São Paulo, São Paulo, Brazil; Department of Research of IPSPAC-Instituto Paulista de Saúde para Alta Complexidade, Santo Andre, São Paulo, Brazil, and Division of Functional Neurosurgery, Institute of Neurology, University of São Paulo, São Paulo, Brazil; Institute of Neurology, University of São Paulo, São Paulo, Brazil.

Critical Care Medicine

|September 14, 2020

Summary

No abstract available in PubMed .

More Related Videos

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Studying Aggression in Drosophila fruit flies

Studying Aggression in Drosophila fruit flies

Published on: February 25, 2007

Related Experiment Videos

Last Updated: Dec 9, 2025

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Studying Aggression in Drosophila fruit flies

Studying Aggression in Drosophila fruit flies

Published on: February 25, 2007