They should be concerned about his integument system. Skeletal would be bones respiratory would be breathing muscular would be muscle soreness.
There are reports of iron overdosage in the United States under 6 years of age and this is one of the common death due to poisoning. The red blood cells have hemoglobin which is a protein carrying oxygen to the cells in the body. The body then needs iron to produce hemoglobin. If one does not have iron, the red blood cells will become pale and smaller thus they cannot carry oxygen enough in the body.
I don't know what the 1.6 means but if an individuals skin has a rash,itching or bubbling these should be reported or one should see a doctor, these can be a cause of a allergy or wrong medication.
C. Aorta
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Answer:
The 3 functions are transport, protection, and regulation:)