In high-value districts, fire hydrants should not be spaced more than ___ apart

As the third line of defense of the body against infectious organisms, special proteins are produced by the body against foreign substances called

A) antibodies B) antigens C) macrophages D) immunoglobulins

SCENARIOUse this scenario to answer the following question(s).A 47-year-old male was walking across the street when he was struck by an oncoming car. You find him conscious and alert. Your partner has taken spinal restriction, and you ensure that he has no compromise to the airway or circulation. He complains of abdominal pain, back pain, and pain in his left leg. You explain that the ambulance is on the way, and you begin a more detailed exam.This patient's back pain makes you suspicious of injury to the kidneys. The kidneys are contained:

A. within the pelvic cavity. B. behind the thoracic cavity. C. behind the abdominal cavity. D. within the abdominal cavity.