Santa writing his medical entrance exam!!?

Santa writing his medical entrance exam gives definitions as follows :

*Antibody : Against everybody

*Artery : Study of fine paintings

*Genes : Blue denims

*Hymen : Greeting to several males

*Labour pain : Hurt at work

*Liposuction : French kiss

*Microbes : Small dressing gowns

*Cardiology : Advanced study of playing cards

*Cat scan : Searching lost cat

*Coma : Punctuation mark

*Bacteria : Back door to cafeteria.