The diencephalon, also known as the interbrain or betweenbrain, is one of the major areas of the brain, along with the brainstem, cerebellum, and cerebrum. This structure in the brain contains a number of smaller components of the brain which perform a variety of roles to keep the body functioning.
Security code. The security code on a credit card is the brief number that is printed on the card that helps verify its legitimacy. Depending on the card, the security code can be a three-digit or four-digit number, printed on either on the back of the card or the front, and goes by several names. The most common is CVV, which stands for card verification value code.
(it is the last 3 digits AFTER the credit card number in the signature area of the card). You can find your four-digit card verification number on the front of your American Express credit card above the credit card number on either the right or the left side of your credit card.CARD VERIFICATION VALUE CODE (CVV).ou can find your four-digit card verification number on the front of your American Express credit card above the credit card number on either the right or the left side of your credit card. CARD VERIFICATION VALUE CODE (CVV).