Use the graph to choose the correct bolded answer in each bracket to complete the
paragraph.
infected cells can release chemicals that travel through the bloodstream to alert
the brain. the brain then sends signals along [veins; muscles; nerve cells;
bones) to increase the temperature of the body. white blood cells are brought into
the infected area using the [digestive system; respiratory system; circulatory
system; endocrine system). based on the graph, the infected area most likely
stops releasing chemicals to alert the brain of an infection [2 hours; 3 hours;
5 hours; 7 hours after the infection starts.
o veins; digestive system; 2 hours
o muscles, respiratory system; 4 hours
nerve cells; circulatory system; 5 hours
nerve cells; endocrine system; 7 hours