The cumulative effective dose (CumEfD) limit does not include

1. exposure acquired as a consequence of a radiation worker’s undergoing medical imaging procedures. 2. radiation exposure from natural background radiation.

The essential concept underlying radiation protection is that

any organ in the human body is vulnerable to damage from exposure to ionizing radiation.

What do agents such as specific chemicals, viruses, and ionizing radiation have in common?

They are all mutagens that can increase the frequency of mutations.

Radiation-induced genetic abnormalities are caused by unrepaired damage to

DNA molecules in the sperm or ova of an adult.

The term LD 50/30 signifies the whole-body dose of radiation that can be lethal to

50% of the exposed population within 30 days.

Which of the following are classified as early tissue reactions of ionizing radiation?

Nausea, epilation, and intestinal disorders

The correct order of development of the male germ cell from the stem cell phase to the mature cell is

spermatogonia, spermatocyte, spermatid, sperm.

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Rad 201 E2

Question	Answer
The effective dose (EfD) occupational limit for the lens of the eye is	15 mSv.
Epidemiologic studies of atomic bomb survivors exposed in utero have provided conclusive evidence of a dose-dependent increase in the incidence of severe intellectual disability for fetal doses higher than approximately	0.4 Sv.
The cumulative effective dose (CumEfD) limit does not include	1. exposure acquired as a consequence of a radiation worker’s undergoing medical imaging procedures. 2. radiation exposure from natural background radiation.
Determine the cumulative effective dose (CumEfD) limit to the whole body of an occupationally exposed person who is 46 years old.	460 mSv
The essential concept underlying radiation protection is that	any organ in the human body is vulnerable to damage from exposure to ionizing radiation.
Laboratory experiments with mice conclude that cataracts may be caused by doses of ionizing radiation as low as	0.1 Gyt.
Radiation-induced cataracts in humans follow a ______ dose–response relationship.	threshold, nonlinear
What do agents such as specific chemicals, viruses, and ionizing radiation have in common?	They are all mutagens that can increase the frequency of mutations.
Radiation-induced genetic abnormalities are caused by unrepaired damage to	DNA molecules in the sperm or ova of an adult.
Some mutations in genetic material occur spontaneously, without a known cause. In humans, a hereditary disorder is present in approximately _________ of all live births in the United States.	10%
Which of the following is a category of white blood cell that is essential in fighting infections?	Granulocytes
The term LD 50/30 signifies the whole-body dose of radiation that can be lethal to	50% of the exposed population within 30 days.
Moist and dry desquamation can be caused by	high radiation doses.
Which of the following are classified as early tissue reactions of ionizing radiation?	Nausea, epilation, and intestinal disorders
The correct order of development of the male germ cell from the stem cell phase to the mature cell is	spermatogonia, spermatocyte, spermatid, sperm.

Created by: cathrvn

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