The earliest detectable physical change due to a large radiation exposure is

sterility.
presence of mutations.
a drop in lymphocyte count.
shortening of the life span.


a drop in lymphocyte count.

Rationale: A drop in lymphocyte count would be an indication of the earliest detection of radiation exposure because rapidly dividing cells are the most prone to damage.

Health Professions

You might also like to view...

Which of the following is the BEST reason firefighters should not move objects during a search?

A. It could create more fire fuel. B. It may disorient them during a search. C. It can cause occupants to become confused. D. It might change the ventilation needs of the structure.

Health Professions

All of the following respiratory rates would be considered a serious problem for an adult, EXCEPT ________.

A. 10 B. 15 C. 25 D. 30

Health Professions

The primary purpose of using an index in medicine/dentistry is to

A) standardize and reproduce data collected. B) make data collection more efficient. C) supplement clinical data with the patient's medical history. D) formulate a surgical treatment plan.

Health Professions

Which of the following agents is helpful in reducing bacterial levels?

a. lidocaine viscous b. chlorhexidine c. neutral fluoride d. acidulated phosphate fluoride

Health Professions