Chapter 2: Altered Cellular And Tissue Biology Flashcards
A reversible, structural, or functional responsible to both normal or physiological conditions and adverse or pathological conditions
Adaptation
Decrease in cell size
Atrophy
Increase in cell size
Hypertrophy
Increase in cell number
Hyperplasia
Reversible replacement of one mature cell type by another less mature cell type or a change in the phenotype
Metaplasia
Deranged cellular growth (atypical hyperplasia)
Dysphasia
Where is atrophy most common to occur?
Skeletal muscle, the heart, secondary sex organs, and the brain
An adaptive mechanism that enables certain organs to regenerate (i.e. the liver)
Compensatory hyperplasia
Abnormal proliferation of normal cells and can occur as a response to excessive hormonal stimulation or the effects of growth factors in target cells
Pathological hyperplasia
Abnormal changes in size, shape, and organization of mature cells
Dysplasia
When dysplastic changes penetrates the basement membrane it is covered considered a preinvasive neoplasm and I known as
Carcinoma in situ
What is the most common cause of cellular injury
Hypoxia
Lack of ATP leads to an increase in anaerobic metabolism, which generates ATP from?
Glycogen
The destruction of unsaturated fatty acids
Lipid perixidation
Compounds that humans are exposed to, including toxic, mutagenic, and carcinogenic chemicals
Xenobiotics
An atom or molecule that is attracted to electrons and accept a pair of electrons to make a covalent bond
Electrophile
An atom or molecule that donates an electron pair to form a chemical bond?
Nucleophile
Contamination of the indoor or outdoor environment by any chemical, physical, or biologic agent that modifies natural characteristics of the atmosphere
Air pollution
Exposure to this toxin increases risk for brain damage and nervous system; slowed growth & development, learning and behavior problems, hearing/speech problems
Lead (pb)
Oxygen failing to reach the blood, can result from a lack of oxygen in the environment or blockage or the external airways
Suffocation
Compression and closure of the blood vessels and air passages resulting from external pressure on the neck
Strangulation
Uncontrolled increase in body temperature that exceeds the body’s ability to lose heat
Hyperthermia
(Cramping if voluntary muscles) usually a result of vigorous exercise that causes a loss of salt and water due to sweat
Heat cramps
A life threatening condition associated with a high environmental temps and humidity
Heat stroke
Occurs in individuals with an inherited disorder of skeletal muscle sarcoplasmic reticulum in response to anesthetics
Malignant hyperthermia
Where generations of cell derived from an irradiated progenitor cell appear normal but time-lethal (irreversible) and nonlethal mutations appear is distant progeny, sometimes called “vertical transmission”
Genomic instability
The Portion of the electromagnetic spectrum that interacts with the eye is called __________ _________. Includes wavelengths from UC light to infrared light.
Optical radiation
A perpendicular caring force
Compression
A stretching force
Tension