I feel it was T (Zoies2) who got the closest with an explanation, just couldn't explain it. Kudos to everyone who guessed Anatomy. :))
Answer to Three: Anatomy because I added An-A-To-My name (break the spelling down).
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Four: A non biology joke but a most terrible one. Please enter this zone without your footwear or weapons. :)))
Question: Who is wifey's husband?