Which of the following best represents the causes of stiff muscles?
a. stiff muscles only result from overwork.
b. stiff muscles only result from prolonged periods of inactivity.
stiff muscles result from both over- and underworking them.
d. stiff muscles are mostly the result of painful injuries.

The results of the dexa measurements are known as?

Fill in the table below by placing check marks in the appropriate boxes and writing the product of transcription and translation. super

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.