When a person is engaged in an exercise program the number of blood vessels and capillaries in their muscles increase. (It is estimated that there are 50,000 to 80,000 miles of blood vessels in the body). Explain the role of “increased vascularization” in increasing muscular fitness.

[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.

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.

Place a check mark in the box to indicate which type of mutation is being shown. super urgent