Santa Applied In A Medical College

Santa applied in a medical college but never cleared it as these were his answers:

Antibody: one who hates his/her body.!
Artery: Study of painting.!
Bacteria: Back door of cafeteria.!
Coma: punctuation mark..!
Gall bladder: Bladder of a Girl.!
Genes: Blue Denim.!
Labor pain: hurt at work.!
Ultrasound: Radical Sound.!
Cardiology: advance study of playing cards.