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

Alterations in Respiration II

Alterations in Respiration II

There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...

Respiration

Respiration

Overview of the Respiratory System and Energy Production
Energy production in the human body is primarily fueled by oxidation, a process where food molecules are burned by combining with oxygen to produce carbon dioxide and water. This vital metabolic process sustains life, and is supported intricately by the respiratory system.
Structure and Function of the Respiratory System:
The respiratory system is a complex network of structures that includes the nose, oropharynx, larynx, trachea,...

External and Internal Respiration

External and Internal Respiration

External respiration occurs in the lungs, and it is the first step in the journey of oxygen inside the body. When we inhale, oxygen enters our lungs and diffuses across the thin alveolar membrane. The alveoli are tiny, air-filled sacs that provide a vast surface area for gas exchange. Oxygen in the alveoli has a higher partial pressure (105 mmHg) than in the adjacent pulmonary capillaries (40 mmHg), establishing a pressure gradient. As a result, oxygen molecules move from the alveoli into the...

Respiration and Gaseous Exchange

Respiration and Gaseous Exchange

The intricate interplay between the cardiovascular and respiratory systems is crucial for efficiently transporting respiratory gases throughout the body. Let us explore the cardiovascular system's multifaceted functions, emphasizing its pivotal role in gas exchange.
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves the...

Factors Affecting Respiration

Factors Affecting Respiration

Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:

Chemical Factors Affecting Respiration Centers

Chemical Factors Affecting Respiration Centers

Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated. Under...

You might also read

Related Articles

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

Sort by

Same author

Neural metabolism and function.

Research reviews. United States. Office of Naval Research·2014

Same author

The acetylcholine system in neural function.

Omnia medica·2014

Same author

Physiological studies on infantrymen in combat.

University of California publications in physiology·2014

Same author

The biological basis of imagination.

The Scientific monthly·2010

Same author

General neurophysiology.

Progress in neurology and psychiatry·2010

Same author

Membrane potentials and excitation of impaled single muscle fibers.

Journal of cellular and comparative physiology·2010

Same journal

On the mechanism of hypomagnesemia with treatment-resistant seizures caused by variants of the Na+,K+-ATPase α1 subunit (ATP1A1).

The Journal of general physiology·2026

Same journal

Label-free real-time imaging of mitochondrial matrix volume changes and permeability transition in living cells.

The Journal of general physiology·2026

Same journal

Differential regulation of β1-dependent voltage shifts and kinetic modulation by an extracellular glutamate in NaV1.6 VSDIV.

The Journal of general physiology·2026

Same journal

Mechanistic insights into DCPIB inhibition of VRAC: Electrostatic control and binding plasticity.

The Journal of general physiology·2026

Same journal

An epilepsy-associated KV3.1 potassium channel variant acts via dominant-positive effect.

The Journal of general physiology·2026

Same journal

Regulation of olfactory chloride and cyclic nucleotide-gated channels by cholesterol.

The Journal of general physiology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 19, 2026

Metabolic Profile Analysis of Zebrafish Embryos

Published on: January 14, 2013

A NOTE ON THE RESPIRATION OF ARBACIA EGGS.

R W Gerard¹, B B Rubinstein

¹The Marine Biological Laboratory, Woods Hole.

The Journal of General Physiology

|October 30, 2009

Summary

This summary is machine-generated.

Researchers reexamined methods for Arbacia egg respiration studies. A consistent error in measuring egg volume by centrifuging led to results 80% too high, impacting previous findings.

More Related Videos

Measurement of Oxygen Consumption Rates in Intact Caenorhabditis elegans

Measurement of Oxygen Consumption Rates in Intact Caenorhabditis elegans

Published on: February 23, 2019

Maintaining Laboratory Cultures of Gryllus bimaculatus, a Versatile Orthopteran Model for Insect Agriculture and Invertebrate Physiology

Maintaining Laboratory Cultures of Gryllus bimaculatus, a Versatile Orthopteran Model for Insect Agriculture and Invertebrate Physiology

Published on: June 8, 2022

Related Experiment Videos

Last Updated: Jun 19, 2026

Metabolic Profile Analysis of Zebrafish Embryos

Published on: January 14, 2013

Measurement of Oxygen Consumption Rates in Intact Caenorhabditis elegans

Measurement of Oxygen Consumption Rates in Intact Caenorhabditis elegans

Published on: February 23, 2019

Maintaining Laboratory Cultures of Gryllus bimaculatus, a Versatile Orthopteran Model for Insect Agriculture and Invertebrate Physiology

Maintaining Laboratory Cultures of Gryllus bimaculatus, a Versatile Orthopteran Model for Insect Agriculture and Invertebrate Physiology

Published on: June 8, 2022

Area of Science:

Marine Biology
Cellular Respiration
Developmental Biology

Background:

Accurate measurement of egg volume is crucial for quantifying cellular respiration rates.
Previous studies on Arbacia egg respiration may have been affected by methodological inaccuracies.
Understanding respiration is key to studying early embryonic development.

Purpose of the Study:

To re-evaluate and refine methods for preparing Arbacia eggs for respiration studies.
To identify and correct sources of error in manometric determinations and egg quantity estimations.
To establish a more accurate baseline for Arbacia egg respiration rates.

Main Methods:

Re-examination of egg preparation techniques for respiration assays.
Critical review of manometric procedures for gas exchange measurements.
Development of a corrected method for estimating egg volume, addressing errors from centrifuging.

Main Results:

A consistent error in measuring egg volume by centrifuging was identified, inflating volumes by an average of 80%.
Corrected egg volumes provide a more accurate basis for respiration calculations.
The respiration rate of unfertilized Arbacia punctulata eggs at 21°C was determined to be 0.9 c.mm. O(2)/hour/10 c.mm. eggs.

Conclusions:

Previous measurements of Arbacia egg respiration were significantly overestimated due to a consistent error in volume determination.
The refined methodology provides a more reliable value for Arbacia egg respiration.
Accurate baseline respiration data is essential for future research on early sea urchin development and metabolism.