Human Biology

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Which lists the skin layers from outermost to innermost?

Normal flow of blood through the heart would be

Which blood cells contain hemoglobin?

Blood is carried through vessels to all parts of the body except the lungs by

As air passes through the lungs, it follows the path

Which blood cells help the body resist disease?

When blood travels from the heart to the lungs this is

Which nutrient category is needed for growth and repair of cells?