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Related Concept Videos

Breathing01:05

Breathing

65.2K
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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External and Internal Respiration01:24

External and Internal Respiration

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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...
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Other Factors Affecting Respiration Centers01:17

Other Factors Affecting Respiration Centers

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Breathing is primarily an involuntary activity regulated by the brainstem respiratory centers. However, it can also be consciously controlled, allowing us to hold our breath or take deeper breaths when needed. This voluntary control is facilitated by the cerebral motor cortex, which bypasses the medullary centers to stimulate the respiratory muscles directly.
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical...
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Physiological Control of Respiration01:23

Physiological Control of Respiration

6.6K
Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
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Respiration01:24

Respiration

5.1K
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,...
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Respiration and Gaseous Exchange01:20

Respiration and Gaseous Exchange

3.9K
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...
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Related Experiment Videos

Let Them Breathe.

Marilyn Clifford1

  • 1School Nurse, Camden City NJ School District, Camden City, NJ.

NASN School Nurse (Print)
|February 23, 2017
PubMed
Summary

Childhood asthma arises from genetic and environmental influences, with health inequities worsening these factors. Preschool nurses are vital in addressing these inequities for urban children during early asthma development.

Area of Science:

  • Pediatric Pulmonology
  • Environmental Health
  • Health Equity Studies

Background:

  • Childhood asthma results from a complex interplay between genetic predispositions and environmental exposures.
  • Health inequities significantly exacerbate the environmental factors contributing to pediatric asthma.
  • Asthma symptom development often begins in the preschool years, highlighting a critical window for intervention.

Purpose of the Study:

  • To emphasize the critical role of preschool nurses in mitigating health inequities affecting urban children with asthma.
  • To underscore the importance of early intervention in preschool years for managing childhood asthma.
  • To highlight the environmental and genetic factors contributing to childhood asthma.

Main Methods:

  • This study is a review and synthesis of existing literature on childhood asthma, environmental factors, and health inequities.
Keywords:
asthma emergenciesbreastfeedinghealth inequitypassive smokingpreschool nurse

Related Experiment Videos

  • Analysis focuses on the developmental stages of asthma during preschool years.
  • The role of healthcare providers, specifically preschool nurses, is examined in the context of addressing health disparities.

    • Main Results:

    • Preschool years are a key period for the establishment of asthma features.
    • Health inequities disproportionately impact urban children with asthma by compounding environmental risk factors.
    • Preschool nurses are uniquely positioned to identify and address these health inequities.

    Conclusions:

    • Addressing health inequities is crucial for managing childhood asthma, particularly in urban preschool populations.
    • Early intervention strategies implemented by preschool nurses can significantly impact asthma outcomes.
    • A comprehensive approach considering genetic and modifiable environmental factors, alongside health equity, is essential for pediatric asthma management.