Reversible cell injury occurs when cells experience extreme stress that they cannot immediately adapt to but can recover from if the stress is removed. This type of injury leads to cellular and morphological changes that are reversible. There are three primary mechanisms through which reversible cell injury can occur: 1. Depletion of ATP Resources ATP […]
Cell damage can be either reversible or irreversible, depending on the extent and severity of the injury. When the cellular response is adaptive, homeostasis is maintained, and the damage can be repaired. However, when the injury (or stress) is too severe for the cell to repair itself, cell death ensues. The outcome of cell injury […]
Etiology of Cell Injury Cell injury is a sequence of events that occur if the limits of adaptive capability are exceeded or no adaptive response is possible. This can be due to physical, chemical, infectious, biological, immunological factors and nutritional cellular abnormalities. A) Acquired cause Acquired causes of cell injury are further categorized as: (a) […]
Cell injury is a fundamental component in the pathology of almost all diseases. It is defined as an alteration in cell structure or biochemical functioning due to stress that exceeds the cell’s capacity to adapt through normal physiological mechanisms. Cell injury occurs when cells are subjected to severe stress, exposed to damaging agents, or suffer […]
Adaptation refers to process by which a system seeks to restore or maintain homeostasis. Adaptive mechanism may also be referred to as compensatory mechanisms, homeostatic mechanisms, control and regulatory mechanism. Although adaptation may be physiological, psychological, behavioural, in system’s terminology adaptive mechanisms are examples of feedback to the system and may be represented by either […]
Homeostasis is a fundamental concept in physiology and biology, describing the body’s ability to maintain stable internal conditions despite external changes. It involves intricate regulatory mechanisms that ensure the optimal functioning of cells, tissues, organs, and systems within a narrow range of parameters. Here’s a detailed note covering various aspects of homeostasis: Introduction to Homeostasis […]
Pathophysiology is the study of how diseases or abnormal conditions affect the normal functioning of the body’s organs and systems. It involves understanding the physiological processes that become disrupted or altered due to various pathological conditions. Here’s a detailed note covering the introduction and basic definitions used in pathophysiology: Introduction to Pathophysiology 1. Definition: Pathophysiology […]
