Pregnancy tests determine the levels of what substance, which is present in increasingly higher levels during pregnancy, in both urine and blood?

Andrea is an EMS supervisor with a combined EMS/Fire department. On the scene of a hazardous materials incident, she uses her knowledge of hazardous materials to support the activities of other responders and manage the scene. Andrea's level of hazardous materials training is at the ________ level

A) First Responder Awareness B) First Responder Operations C) Hazardous Materials Technician D) Hazardous Materials Specialist

Your patient is a 22-year-old female that accidentally ate some shellfish and is now having a severe reaction. She tells you that the last time she ate shellfish, "they had to put a breathing tube in my throat and I almost died." Her face is starting to swell up and you can hear audible wheezing when she breathes. The chemical that produces edema and narrowing of the airways during

hypersensitivity reactions like this is called: A) insulin. B) histamine. C) serotonin. D) acetylcholine.