The answer is in the picture
Superior and inferior
Superior (from Latin super, meaning 'above') describes what is above something and inferior (from Latin inferus, meaning 'below') describes what is below it. For example, in the anatomical position, the most superior part of the human body is the head and the most inferior is the feet.
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urinary bladder is the answer
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<span>treatment with a vaccine to produce immunity against a disease.</span>