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Related Concept Videos

Breathing01:05

Breathing

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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...
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Physical Assessment of the Respiratory Tract IV: Auscultation01:28

Physical Assessment of the Respiratory Tract IV: Auscultation

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Auscultation is a crucial component of the physical assessment of the respiratory tract. It offers valuable insights into airflow through the bronchial tree and potential lung obstructions. This process involves careful listening to breath, voice, and adventitious sounds, which can reveal a wealth of information about a patient's respiratory health.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
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Mechanism of Breathing II: Expiration01:23

Mechanism of Breathing II: Expiration

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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:
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Therapeutic Communication01:30

Therapeutic Communication

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Communication is a lifelong learning process. Through therapeutic communication, nurses can collect relevant assessment data, provide education and counseling, and interact during nursing interventions. Sending and receiving messages occur through verbal and nonverbal communication techniques and can happen separately or simultaneously.
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Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

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In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
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Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

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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:
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Related Experiment Video

Updated: Mar 7, 2026

Precision Induction and Distinction of Coughing and Sneezing Reflexes in Mice
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Precision Induction and Distinction of Coughing and Sneezing Reflexes in Mice

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Sighing.

Peng Li1, Kevin Yackle1

  • 1Department of Biochemistry and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.

Current Biology : CB
|February 8, 2017
PubMed
Summary

Sighing is a special breath with key physiological roles and serves as a method for emotional expression. This guide explores its dual functions in the body and communication.

Area of Science:

  • Physiology
  • Psychology
  • Communication Studies

Background:

  • Sighing is a recurring respiratory event observed across many mammalian species.
  • It plays a crucial role in lung health and autonomic nervous system regulation.
  • Beyond physiological functions, sighing is recognized for its involvement in emotional signaling.

Purpose of the Study:

  • To provide a comprehensive overview of the physiological mechanisms underlying sighing.
  • To explore the role of sighing in emotional communication and regulation.
  • To consolidate current knowledge on the multifaceted nature of sighing.

Main Methods:

  • Literature review of physiological and psychological studies on sighing.
  • Analysis of respiratory patterns and their correlation with emotional states.

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Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
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Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

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  • Synthesis of research on the communicative function of sighs.

    • Main Results:

    • Sighing facilitates alveolar recruitment and prevents lung collapse.
    • It acts as a key component in the body's response to stress and emotional challenges.
    • Sighs are reliably decoded as indicators of negative affect and social signaling.

    Conclusions:

    • Sighing is a vital physiological process with significant implications for respiratory and emotional well-being.
    • Understanding sighing offers insights into both biological regulation and interpersonal communication.
    • Further research can elucidate the full spectrum of sighing's impact on health and social interaction.