How will richard’s body react when a friend jumps in front of him and scares him? richard’s central nervous system will take over, and his peripheral nervous system will play a lesser role. richard’s peripheral nervous system will take over, and his central nervous system will play a lesser role. richard’s sympathetic nervous system will take over, and his parasympathetic nervous system will play a lesser role. richard’s parasympathetic nervous system will take over, and his sympathetic nervous system will play a lesser role.

[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.

What percent of body heat can be lost through the head

If mary has stopped her resistance training for three weeks, once she continues, she should work out harder to get back in shape keep her workout the same as before her break reduce the weight during the workout session reduce the rest times between sets