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Flashcards in CELL INJURY & DEATH Deck (25)
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1

Describe Reversible Cell Injury.

Impairs cell function but does not cause death

2

What is Cellular Swelling?

A result of hypoxic cell injury

3

What is 'Intracellular Accumulation'?

Abnormal intracellular accumulation of substances

4

Define 'Apoptosis'.

Eliminates injured/aged cells, and replaces with new cells

5

Define 'Necrosis'.

Cell death in an organ or tissue that is still part of a living tissue

6

Define 'Gangrene'.

Mass of tissues undergoes Necrosis

7

Explain the Evolution Theory.

A consequence of natural selection

8

Explain the Molecular Theory.

A result of gene expression

9

Explain the Cellular Theory.

Result of free radical damage/apoptosis

10

Explain the System Theory.

Attributes cellular aging - decline in functions of organ systems

11

What is ‘Lipofuscin’?

Age spots

12

List the six causes of cell injury.

- Hypoxia
- Physical Agent
- Radiation
- Chemical
- Biological Agent
- Nutrition Imbalances

13

Describe Hypoxia.

Most common cell injury from lack of oxygen

14

Describe injury from Physical Agents.

Injuries from environmental exposure, accidents, physical violence and assault

15

Explain the damage of a Mechanical Force injury.

Impact of body with another object, splitting or tearing tissue

16

Explain the damage of a Extreme Temperature injury.

Damage to cells, organelles, and enzymes system

17

Explain the damage of a Electrical injury.

Disruption of neutral and cardiac impulses

18

Describe Ionizing Radiation.

Immediately kill cells, interrupt cell replication, and cause genetic mutations - used in treatments of cancer

19

Describe Ultraviolet Radiation.

Damage to melanin and DNA, causing sunburn and increases risk of skin cancers

20

Describe Non-ionizing Radiation.

Infrared light, ultrasound, microwave, and laser energy causing vibration and rotation of atoms/molecules (causing hyperthermia)

21

Describe a Chemical injury.

Drugs, lead and mercury toxicity injury the cell membrane and other structures

22

Describe injury from Biological Agents.

Viruses and parasites that are able to replicate and continue to produce injurious effects

23

Describe injury from Nutritional Imbalances.

Nutritional excesses and deficiencies predispose cells to injury

24

Lack of Vitamin C will cause?

Scurvy - Swollen bleeding gums

25

Lack of Vitamin B1 (Thymine) will cause?

Beri Beri - Nutrition disorder