RADT 1200 - 8, 9, 10 - TEST 3 EXAM
QUESTIONS AND ANSWERS
When biologic effects of radiation occur relatively soon after humans receive high
doses of ionizing radiation, the biologic responses demonstrated are referred to as
____________________. - Answer- Early affects
The term ____________________ originates from the Greek term "soma" meaning
"body." - Answer- somatic
____________________ effects are effects upon the body that was irradiated. -
Answer- Somatic
Depending on the length of time from the moment of irradiation to the first
appearance of symptoms of radiation damage, somatic effects are classified as
either __________ or __________. - Answer- early or late
If the consequences of irradiation include cell killing and are directly related to the
dose received, they are termed ____________________ reactions. - Answer-
deterministic
As the radiation dose increases, the severity of early somatic tissue reactions
____________________ - Answer- increases
Early tissue reactions may appear within: - Answer- minutes, hours, days, weeks
____________________ is the medical term that defines a collection of symptoms. -
Answer- syndrome
Name the 3 syndromes that are part of Acute Radiation Syndrome (ARS): - Answer-
hematopoietic, gastrointestinal, cerebrovascular
The hematopoietic syndrome occurs from exposures that range from __________
Gy to __________ Gy - Answer- 1 Gy - 10 Gy
The gastrointestinal syndrome occurs at a threshold dose of approximately
__________ Gy and peaks after a dose of __________ Gy. - Answer- 6 Gy - 10
Gy
What aspect of the gastrointestinal system is the most severely affected from
exposure to radiation? - Answer- small intestine
, The cerebrovascular syndrome occurs when exposures of __________ Gy or more
occur - Answer- 50 Gy
What is Erythema? - Answer- redness of the skin
What is epilation? - Answer- hair loss
The ____________________ signifies the whole-body dose of radiation that can be
lethal to 50% of the exposed population within 30 days. - Answer- LD 50/30
The LD 50/30 for adult humans is _____ Gy to _____ Gy. - Answer- 3 Gy - 4 Gy
Cells contain a repair mechanism inherent in their biochemistry known as repair
____________________ - Answer- enzymes
The __________ is the outer layer or surface of the skin. - Answer- epidermis
____________________ is the term used to describe the shedding of the outer
layer of skin. - Answer- desquamation
____________________ is the term used to describe loss of hair. - Answer-
epilation
The ____________________, which are the stem cells of the testes, continually
reproduce - Answer- spermatogonia
The ____________________ are the ovarian stem cells. - Answer- oogonia
Cells of the hematopoietic system develop from a single precursor cell known as the
____________________ stem cell. - Answer- pluripotential
____________________ is the phase of cell division in which chromosome damage
caused by radiation exposure can be evaluated. - Answer- metaphase
Stages of Acute Radiation Syndrome - Answer- prodromal, latent, manifest,
recovery or death
what blood cell is most affected by radiation - Answer- lymphocyte
a point at which a response or reaction to an increasing stimulation occures -
Answer- threshold
most important late stochastic affect - Answer- cancer
only branch of radiology overseen by FDA - Answer- mamo
QUESTIONS AND ANSWERS
When biologic effects of radiation occur relatively soon after humans receive high
doses of ionizing radiation, the biologic responses demonstrated are referred to as
____________________. - Answer- Early affects
The term ____________________ originates from the Greek term "soma" meaning
"body." - Answer- somatic
____________________ effects are effects upon the body that was irradiated. -
Answer- Somatic
Depending on the length of time from the moment of irradiation to the first
appearance of symptoms of radiation damage, somatic effects are classified as
either __________ or __________. - Answer- early or late
If the consequences of irradiation include cell killing and are directly related to the
dose received, they are termed ____________________ reactions. - Answer-
deterministic
As the radiation dose increases, the severity of early somatic tissue reactions
____________________ - Answer- increases
Early tissue reactions may appear within: - Answer- minutes, hours, days, weeks
____________________ is the medical term that defines a collection of symptoms. -
Answer- syndrome
Name the 3 syndromes that are part of Acute Radiation Syndrome (ARS): - Answer-
hematopoietic, gastrointestinal, cerebrovascular
The hematopoietic syndrome occurs from exposures that range from __________
Gy to __________ Gy - Answer- 1 Gy - 10 Gy
The gastrointestinal syndrome occurs at a threshold dose of approximately
__________ Gy and peaks after a dose of __________ Gy. - Answer- 6 Gy - 10
Gy
What aspect of the gastrointestinal system is the most severely affected from
exposure to radiation? - Answer- small intestine
, The cerebrovascular syndrome occurs when exposures of __________ Gy or more
occur - Answer- 50 Gy
What is Erythema? - Answer- redness of the skin
What is epilation? - Answer- hair loss
The ____________________ signifies the whole-body dose of radiation that can be
lethal to 50% of the exposed population within 30 days. - Answer- LD 50/30
The LD 50/30 for adult humans is _____ Gy to _____ Gy. - Answer- 3 Gy - 4 Gy
Cells contain a repair mechanism inherent in their biochemistry known as repair
____________________ - Answer- enzymes
The __________ is the outer layer or surface of the skin. - Answer- epidermis
____________________ is the term used to describe the shedding of the outer
layer of skin. - Answer- desquamation
____________________ is the term used to describe loss of hair. - Answer-
epilation
The ____________________, which are the stem cells of the testes, continually
reproduce - Answer- spermatogonia
The ____________________ are the ovarian stem cells. - Answer- oogonia
Cells of the hematopoietic system develop from a single precursor cell known as the
____________________ stem cell. - Answer- pluripotential
____________________ is the phase of cell division in which chromosome damage
caused by radiation exposure can be evaluated. - Answer- metaphase
Stages of Acute Radiation Syndrome - Answer- prodromal, latent, manifest,
recovery or death
what blood cell is most affected by radiation - Answer- lymphocyte
a point at which a response or reaction to an increasing stimulation occures -
Answer- threshold
most important late stochastic affect - Answer- cancer
only branch of radiology overseen by FDA - Answer- mamo
