Which term refers to an increase in the number of cells?

Which term refers to an increase in the number of cells?

The term hypertrophy means that there has been an increase in size of individual cells.

What basic changes occur as a result of cell injury?

When cells are injured, one of two patterns will generally result: reversible cell injury leading to adaptation of the cells and tissue, or irreversible cell injury leading to cell death and tissue damage. When cells adapt to injury, their adaptive changes can be atrophy, hypertrophy, hyperplasia, or metaplasia.

What happens when a cell is confronted with a decrease in work demands?

Explanation: When confronted with a decrease in work demands or adverse environmental conditions, most cells are able to revert to a smaller size and a lower and more efficient level of functioning that is compatible with survival. This decrease in cell size is called atrophy.

Which of the following best describes the cellular adaptation seen in chronic cigarette smokers?

Which of the following best describes the cellular adaptation seen in chronic cigarette smokers? Metaplasia: As cells are damaged, a hardier version replaces the normal strata of cells. buildup of substances that cells cannot immediately use or eliminate.

Which cellular adaptation describes an increase in the number of cells in response to an increased workload?

Hyperplasia is an increase in the number of cells. It is the result of increased cell mitosis or division (also referred to as cell proliferation). The two types of physiologic hyperplasia are compensatory and hormonal.

Which of the following is the most common cause of cellular injury?

Hypoxia

What can damage cells?

Physical agents such as heat or radiation can damage a cell by literally cooking or coagulating their contents. Impaired nutrient supply, such as lack of oxygen or glucose, or impaired production of adenosine triphosphate (ATP) may deprive the cell of essential materials needed to survive.

What can happen in the absence of cell inhibitors?

If that is prevented, the cell cycle stall. However, in the absence of inhibitors cell cycle is continually proceeding and happening (circulus vicious) ending up in cancerous growth.

Can dead neurons regenerate?

This means that when you are born, you would have all the neurons that you would ever have in your life—take care of them because if they die they don’t come back. More recently, biologists have discovered that nerve cells probably can regenerate. They just don’t do it very much or very fast.

Do nerve cells get replaced?

Although other cells die and are replaced, many neurons are never replaced when they die. The damage caused by multiple sclerosis can lead to the death of some of your neurons. If you lose too many neurons, you may develop permanent disability.

What happens when nerve cells die?

When these neurons die, people lose their capacity to remember and their ability to do everyday tasks. Physical damage to the brain and other parts of the central nervous system can also kill or disable neurons.