JOHN, AGE 24, IS INVOLVED IN AN AUTOMOBILE ACCIDENT. Ken, a paramedic, arrives on the scene and does emergency first aid. John has multiple lacerations on his hand and arms; the laceration on his...

JOHN, AGE 24, IS INVOLVED IN AN AUTOMOBILE ACCIDENT.  Ken, a paramedic, arrives on the scene and does emergency first aid.  John has multiple lacerations on his hand and arms; the laceration on his right arm is bleeding profusely.  Ken applies a pressure bandage and notes that John’s blood pressure is 90/60.  Ken starts an intravenous line and transports John to the hospital.  The ER doctor examines John and notes he also has contusions near his liver.  The doctor has the med tech draw blood for a CBC and to type and crossmatch for blood. A severe loss of blood may lead to what condition?  Name the blood components and their function.  Why is the ER doctor concerned about possible liver damage?  How does liver damage relate to the blood?