BASIC RADIOBIOLOGY Flashcards
- a branch of science which combines the basic principles of physics and biology
- is concerned with the action of ionizing radiation on biological tissues and living organisms
RADIOBIOLOGY
All living entities are made up of?
PROTOPLASM
basic microscopic unit of all living organisms
CELL
Group of cells that together perform one or more functions is referred to
TISSUE
Group of tissues that together perform one or more functions is
called
ORGAN
Group of organs:
ORGAN SYSTEM
either a sperm or an egg
GERM CELLS
all other human cells
SOMATIC CELLS
- division of somatic cells
- results in two genetically identical daughter cells
MITOSIS
- division of germ cells
- involves two fissions of the nucleus
giving rise to four sex cells, each possessing half the number of chromosomes of the original germ cell
MEIOSIS
Somatic cells are classified as:
STEM CELLS
TRANSIT CELLS
MATURE CELLS
Dose is delivered continuously but at a lower dose rate
Protraction
Dose is delivered at the same dose rate, in equal fractions, separated by 24 hours
Fractionation
Tissue is more sensitive when…
Irradiated in the oxygenated state than when irradiated without oxygen
Aerobic
Oxygenated