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Related Concept Videos

Mechanism of Breathing II: Expiration01:23

Mechanism of Breathing II: Expiration

The Physiology of Expiration: A Seamless Respiratory Process
Expiration, or exhaling, is a complex physiological process that begins as the inspiratory muscles begin to relax. This relaxation triggers a series of events that epitomize the efficiency of the respiratory system.
Mechanism of Expiration:
Breathing01:05

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
Alterations in Respiration II01:30

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...
Mechanism of Breathing I: Inspiration01:30

Mechanism of Breathing I: Inspiration

Introduction to Inspiration: The Respiratory System in Action
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...
Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Mechanism of Breathing III: The Accessory Muscles01:21

Mechanism of Breathing III: The Accessory Muscles

The Role of Accessory Muscles in the Respiratory System
The respiratory system is a complex network that relies on primary respiratory muscles like the diaphragm, but also involves accessory muscles to enhance lung expansion and airflow during both inhalation and exhalation.
Enhancing Inhalation with Accessory Muscles:
Accessory muscles such as the sternocleidomastoid, scalene, intercostal, and abdominal muscles are crucial when additional respiratory effort is required, such as during deep...

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Related Experiment Video

Updated: May 24, 2026

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry
08:23

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry

Published on: March 9, 2018

Submarines, spacecraft and exhaled breath.

Joachim D Pleil1, Armin Hansel

  • 1Human Exposure and Atmospheric Sciences Division, National Exposure Research Laboratory, Office of Research and Development, US Environmental Protection Agency, USA.

Journal of Breath Research
|February 28, 2012
PubMed
Summary

Researchers in human breath analysis (IABR) and artificial atmosphere maintenance (SAMAP) share common goals in inhalation toxicology, instrumentation, and bio-monitoring for improved health assessments in confined environments.

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Breath Collection from Children for Disease Biomarker Discovery
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Last Updated: May 24, 2026

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry
08:23

Real-time Breath Analysis by Using Secondary Nanoelectrospray Ionization Coupled to High Resolution Mass Spectrometry

Published on: March 9, 2018

VacuSIP, an Improved InEx Method for In Situ Measurement of Particulate and Dissolved Compounds Processed by Active Suspension Feeders
08:57

VacuSIP, an Improved InEx Method for In Situ Measurement of Particulate and Dissolved Compounds Processed by Active Suspension Feeders

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Breath Collection from Children for Disease Biomarker Discovery
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Published on: February 14, 2019

Area of Science:

  • Investigates the intersection of human breath analysis and artificial atmosphere research.
  • Focuses on health implications of trace chemicals in exhaled breath within confined environments like submarines and spacecraft.

Background:

  • The International Association of Breath Research (IABR) studies human health via exhaled breath.
  • The Submarine Air Monitoring and Air Purification (SAMAP) community focuses on maintaining artificial atmospheres for human life support in submarines and spacecraft.
  • Both communities address challenges posed by confined environments and the need for advanced air monitoring.

Framework:

  • Highlights shared concerns in inhalation toxicology, where environmental contaminants impact health and diagnostic assessments.
  • Identifies common needs for developing sensitive, specific, and portable instrumentation for both communities.
  • Recognizes the growing importance of bio-monitoring for assessing long-term health in extended missions.

Implementation:

  • Discusses the development of instruments for air and bio-monitoring, with a focus on non-invasive exhaled breath analysis.
  • Highlights the challenges of energy use, size, and operational ease for instruments in submarines and spacecraft.
  • Compares the needs of clinical settings and home care markets for portable breath analysis tools.

Implications:

  • Suggests potential collaborations between IABR and SAMAP to leverage shared expertise in instrumentation and bio-monitoring.
  • Emphasizes the value of cross-disciplinary exchange for advancing health assessments in extreme environments.
  • Proposes continued engagement through joint meetings and information sharing to foster innovation.