The condition pulmonary fibrosis is caused by the replacement of elastic fibers in the lung with inelastic collagen fibers, which decreases the lungs’ distensibility (the ability to stretch outward). Would pulmonary fibrosis make inspiration or expiration difficult? Explain.

Pulmonary fibrosis is a disease that affects the lungs. The lung tissue becomes damaged and scarred which causes it to be thickened and stiff.

The condition pulmonary fibrosis is caused by the replacement of elastic fibers in the lung with inelastic collagen fibers. This decreases the lungs’ ability to stretch outwards.

Pulmonary fibrosis however mainly affects inspiration because the lungs cannot stretch to increase volume while during expiration stretching of the tissues doesn’t happen so it doesn’t affect the process.

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