What is the process by which a drug is transported by circulating body fluids to receptor sites?

Choice A Reason:

Chronic stress can significantly impact mental health, leading to conditions such as depression. The persistent activation of the stress response system, particularly the release of cortisol, can alter brain function and structure, contributing to mood disorders. Studies have shown that prolonged exposure to stress hormones can lead to changes in the brain that are associated with depression.

Choice B Reason:

Impaired cognitive function is another consequence of chronic stress. Elevated levels of cortisol over an extended period can damage the hippocampus, a region of the brain involved in memory and learning. This can result in difficulties with concentration, memory, and decision-making. Chronic stress has been linked to cognitive decline and an increased risk of neurodegenerative diseases.

Choice C Reason:

Chronic stress can also affect the immune system, leading to autoimmune diseases. The continuous activation of the stress response can cause immune dysregulation, where the body’s immune system mistakenly attacks its own tissues. This can result in conditions such as rheumatoid arthritis, lupus, and other autoimmune disorders.

Choice D Reason:

Overactive immune function is not typically associated with chronic stress. Instead, chronic stress often leads to a weakened immune response, making the body more susceptible to infections and illnesses. Therefore, this choice is incorrect.

Choice E Reason:

Cardiovascular disease is a well-documented consequence of chronic stress. The persistent release of stress hormones like adrenaline and cortisol can lead to increased blood pressure, heart rate, and the formation of artery-clogging deposits. These changes can increase the risk of heart disease, heart attacks, and strokes.

Choice A Reason:

Fat necrosis occurs when fatty tissues are damaged, leading to the release of enzymes that break down fat cells. This type of necrosis is commonly seen in the pancreas and breast tissue, often due to trauma or pancreatitis. It is not typically associated with brain tissue.

Choice B Reason:

Coagulative necrosis is characterized by the preservation of the basic outline of the coagulated cells for a few days after cell death. This type of necrosis is usually seen in tissues affected by ischemia, such as the heart, kidneys, and adrenal glands. However, it is not the typical pattern of necrosis seen in brain tissue.

Choice C Reason:

Caseous necrosis is a form of cell death in which the tissue maintains a cheese-like appearance. It is most commonly associated with tuberculosis infections in the lungs. This type of necrosis is not typically seen in brain tissue.

Choice D Reason:

Liquefactive necrosis is the correct answer. This type of necrosis occurs when the tissue becomes soft and liquefied, often forming a pus-filled cavity. It is commonly seen in the brain due to ischemic injury or bacterial infections. The high lipid content and low structural support in brain tissue make it particularly susceptible to liquefactive necrosis.