Describes changes occurring at the cellular, tissue, and/or organ level that contribute to the disease process.

Nursing pathophysiology paper | Nursing homework help

Cellular level: At the cellular level, disease can be caused by damage to individual cells or entire groups of them. This could manifest as a genetic mutation which causes an abnormal protein to be produced or decreased functionality due to inflammation; either way this can disrupt communication between cells and cause a breakdown in normal functioning.

Tissue Level: At the tissue level, diseases can arise from disruptions in how different elements interact with one another. For instance, if there is an increase in collagen production due to chronic inflammation then it could lead to scarring and fibrosis—a condition where tissues become thickened and less functional. Additionally, malfunctioning organs may produce hormones that are out of balance or have negative effects on adjacent tissues.

Organ Level: On the organ level diseases manifest as changes in organ structure or function. These can range from atrophy (shrinking) due for lack of use/stimulation to hypertrophy (enlargement) due excessive strain; both scenarios can have serious repercussions if left untreated. Similarly, some organs may stop producing certain substances while others might become overactive depending on underlying conditions.

In conclusion, all three levels consist of complex systems that must remain well-regulated in order for us stay healthy; however when one part fails it can set off chain reaction which often leads further impairments throughout the body. By understanding how these processes work we are better equipped to identify potential issues sooner rather than later so appropriate interventions may be put into place before any permanent damage occurs.