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In aging there is usually a gradual INCREASE in the compliance of the lung tissue (i.e. a decrease in tissue elasticity). This means that the lung is more easily distended but then has more difficulty in recoiling to it's original state and so exhalation can become difficult. The compliance of the chest wall is decreased in aging, and respiratory muscles weaken, adding to this effect.
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What determines lung compliance?
Lung compliance is determined by the elasticity of the lung tissue and the surface tension of the alveoli. Compliance decreases with conditions that stiffen the lung tissue, such as fibrosis, or increase surface tension, such as pulmonary edema. Compliance also decreases with aging and certain diseases like chronic obstructive pulmonary disease (COPD).
What is lung compliance?
Lung compliance = Lung expandability
What effect does a deficiency of surfactant exert on lung compliance?
Increased compliance result
Ease with which lung tissue can be stretched?
Compliance
What is the difference between chest wall compliance and lung compliance, and how do they affect overall respiratory function?
Chest wall compliance refers to the ability of the chest wall to expand and contract during breathing, while lung compliance refers to the ability of the lungs to stretch and expand. Chest wall compliance can affect the pressure inside the chest cavity, while lung compliance affects the ease of lung expansion and air flow. Together, they determine how easily air can move in and out of the lungs, impacting overall respiratory function.
What increases static lung compliance?
Static lung compliance increases when the lung tissue becomes more distensible, allowing it to expand more easily with a given change in pressure. Factors that can contribute to increased compliance include loss of elastic recoil due to conditions like emphysema and the presence of surfactant, which reduces surface tension in the alveoli. Additionally, conditions that lead to lung overinflation can also result in increased compliance. However, it is important to note that while increased compliance may facilitate breathing, it can also impair effective gas exchange.
What characteristics of normal lung tissue are missing from diseased tissue?
the two main characteristics of normal lung tissue that may be affected in diseased individuals are either Compliance or Elasticity. compliance is the characteristic of lung tissue that allows it to expand elasticity is the characteristic of lung tissue that allows it go back to its former shape and size. elasticity is usually affected in chronic obstructive conditions like emphysema compliance is usually affected in restrictive lung dysfunctions like pulmonary fibrosis.
Which of the following changes will accompany the loss of lung elasticity associated with aging?
Increase in residual volume
What happens to the skin when aging?
It get rusty and saggy
What happens when a lung cell malfunctions?
you die
What happens when you smoke a pipe?
You get lung cancer!!
What happens when lung cancer is inoperable?
You die!
