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When at rest, breathing out occurs mainly due to the recoil of the lung after they have been stretched, this is a passive process so no energy is used.

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Interesting points that can affect our practice and considerations for our clients -

The right lung is larger and weighs more than the left.

Consider why this is.

The right lung has 3 lobes.

The left lung has two lobes

The right bronchus is larger in diameter and positioned more vertically than the left. Consider a client that has swallowed a small object and having issues with their swallowing co-ordination.

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Transport and exchange - Gas exchange - Multicellular organisms: Video playlist - BBC Bitesize

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The movement and exchange of gas through the respiration system in animals.

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The amount of air we breathe in, with a normal breath

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Total amount of air exhaled, after a maximum inhalation

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The amount of air left in the lungs after a maximum out breath.

This residual volume keeps the lungs partially inflated to protect the microscopic structures.

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this is a reflex triggered to prevent over inflation of the lung.

Pulmonary stretch receptors present on the wall of the bronchi and bronchioles (branches of the lungs) respond to excessive stretching of the lung during large respirations and "switches off" the inhalation process.

This is also involved when sneezing , coughing.

Other receptors in the trachea and bronchial smooth muscle are also involved in the process.

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What factors may alter or have comparatively different measurements such a tidal volume and vital capacity?

Disability

long term health conditions

acutely unwell eg TB, pneumonia

age

gender

general health

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For Restart a Heart 2023, we’re promoting the use of public access defibrillators and encouraging rescue-ready defibrillators to be registered on The Circuit. That’s why we’ve created Defib Dani, a new engaging animation that takes you through the simple steps to using a defibrillator.

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RevivR is a short, self-directed CPR training from British Heart Foundation, that could teach you how to save someone's life.

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Dr Hus on Instagram: "Me counting my patients respiratory rate without them noticing😂🩺 #medicine #doctor #medstudent #medschool #explore"

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11K likes, 34 comments - doctorhus on January 27, 2026: "Me counting my patients respiratory rate without them noticing😂🩺 #medicine #doctor #medstudent #medschool #explore". 

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