The term 'Ambulance Supply' refers to the items that are typically found in an ambulance. Two of these items are PLASMA and SPLINTS, which are both essential for providing medical care. PLASMA is a yellowish liquid component of blood that helps to maintain the body's balance of fluids and electrolytes. SPLINTS are used to immobilize broken bones or joints in order to reduce pain and prevent further injury. Both of these items are essential for providing medical care in an ambulance setting.