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

60 years of ARDS and the evolution of extracorporeal lung support - from ECMO to ECCO<sub>2</sub>R.

Intensive care medicine·2026

Same author

A Qualitative Multicenter Study of Participant Experiences With an App-Based Mindfulness Intervention (Lift 2) for Critical Illness Survivors.

Critical care explorations·2026

Same author

Precision Can Wait, Antibiotics Cannot: The First Hour Matters for Neutropenic Sepsis.

Critical care medicine·2026

Same author

Patients' Experiences of Care During Hospitalization for Acute Respiratory Failure During COVID-19: A Multi-Center Qualitative Study.

Journal of patient experience·2026

Same author

Blueprint 2: A self-directed mobile adaptive coping skills intervention to improve psychological distress symptoms among cardiorespiratory failure survivors study protocol.

Contemporary clinical trials·2026

Same author

Effects of an early restrictive versus liberal fluid strategy on long-term patient-centered outcomes in sepsis-induced hypotension: an open-label, randomized controlled trial.

American journal of respiratory and critical care medicine·2026

Search research articles

Related Experiment Video

Updated: Feb 18, 2026

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

Ithan D Peltan¹, Catherine L Hough, Samuel M Brown

¹Division of Pulmonary and Critical Care Medicine, Department of Medicine, Intermountain Medical Center, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, and Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA;Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA;Division of Pulmonary and Critical Care Medicine, Department of Medicine, Intermountain Medical Center, and Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT.

Critical Care Medicine

|November 18, 2017

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: Feb 18, 2026

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