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exhalation    音标拼音: [,ɛkshəl'eʃən]
n. 呼气,蒸发,发出物

呼气,蒸发,发出物

exhalation
n 1: exhaled breath [synonym: {halitus}, {exhalation}]
2: the act of expelling air from the lungs [synonym: {exhalation},
{expiration}, {breathing out}]

Exhalation \Ex`ha*la"tion\, n. [L. exhalatio: cf. F. exhalaison,
exhalation.]
1. The act or process of exhaling, or sending forth in the
form of steam or vapor; evaporation.
[1913 Webster]

2. That which is exhaled, or which rises in the form of
vapor, fume, or steam; effluvium; emanation; as,
exhalations from the earth or flowers, decaying matter,
etc.
[1913 Webster]

Ye mists and exhalations, that now rise
From hill or steaming lake. --Milton.
[1913 Webster]

3. A bright phenomenon; a meteor. [archaic]
[1913 Webster PJC]

I shall fall
Like a bright exhalation in the evening. --Shak.
[1913 Webster]


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  • What happens when I breathe? The Steps of Inhalation and Exhalation
    The Steps of Inhalation and Exhalation Phase 1: Inhalation Basics Before each breath the air pressure in the lungs is equal to the pressure of the atmosphere outside (760 mmHg) or 1atm For a breath to occur the air pressure in the alveoli must become lower than the outside pressure We achieve this by increasing the volume of the lungs Our lungs
  • Slide 1
    air is pushed out of the lungs Animated Science 2022 Lesson 1: Structure of Thorax Inhalation Exhalation (Sheet B) Task 4: Label the two images to show how the process of ventilation works Structure Function
  • The Breathing System
    Exhalation (When we breathe out we exhale) Firstly the breathing system must inhale oxygen and secondly it must exhale carbon dioxide It is designed to be able to perform both tasks using the same organs One final important fact to remember is that breathing can be performed without humans having to think about it
  • Slide 1
    Chapter 34 34 2 Respiratory System Circulatory, Respiratory, and Excretory Systems This reduces the size of the chest cavity as the diaphragm moves up Chapter 34 34 2 Respiratory System Visualizing Gas Exchange During exhalation, the diaphragm relaxes and returns to its normal resting position
  • PowerPoint Presentation
    Exhalation Largely a passive process which depends on natural lung elasticity As muscles relax, air is pushed out of the lungs Forced expiration can occur mostly by contracting internal intercostal muscles to depress the rib cage Exhalation Figure 13 7b Respiratory Volumes and Capacities Slide 13 26 Normal breathing moves about 500 ml of air with each breath (tidal volume [TV]) Many factors
  • 8B Respiration - Ralph Thoresby School
    When you inhale you breathe in air, including oxygen, into your lungs Breathing out is also known as exhalation When you exhale you breathe out the contents of our lungs and getting rid of the waste gas carbon dioxide In the lungs, oxygen travels to thousands of tiny air sacs called alveoli These are covered with tiny blood vessels
  • Respiratory System - Resources
    During exhalation, these muscles relax The diaphragm domes upwards Alveoli The alveoli are moist, thin-walled pockets which are the site of gas exchange A slightly oily surfactant prevents the alveolar walls from collapsing and sticking together Circulation and Gas Exchange Recall the interconnection between circulation and the respiratory
  • The Respiratory System
    CO2 diffuses into the alveolar space, from which it is expelled during exhalation The reduction of CO2 concentration in the plasma drives the breakdown of H2CO3 Into CO2 and water in the red blood cells (see step 9), a reversal of the reaction that occurs in the tissues (see step 4)
  • PowerPoint Presentation
    Mechanism of breathing At rest: No air movement At Inhalation: The diaphragm descend Negative alveaolar pressure Air moves into the lung At exhalation: The diaphragm ascend Positive alveaolar pressure Air moves out of the lung 1 health history Chief complain Cough Sputum Chest pain Hemoptysis Dyspnea Wheeze Cough Cough is the most common
  • PowerPoint Presentation
    k Variations in tidal volume, respiratory rate, or both will affect the minute volume Ventilation (3 of 4) Exhalation Does not require muscular effort Relaxation of diaphragm and intercostal muscles increases intrapulmonary pressure Diaphragm and intercostal muscles relax and air is exhaled forcefully





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