Which class of drugs is used to decrease blood pressure by decreasing the amount of circulating angiotensin II and decreasing peripheral vascular resistance?
a. Calcium channel blockers c. Direct vasodilators
b. ACE inhibitors d. Adrenergic inhibiting agents
b
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A 52-year-old male with a brain tumor has gone into respiratory arrest. You assign the task of artificially ventilating the patient with the bag-valve mask to a new Emergency Medical Responder. How will you instruct him to ventilate the patient?
A) Deliver 1 breath every 5 to 6 seconds, with each ventilation lasting 1 second. B) Give the patient 20 breaths per minute, with each breath lasting 1.5 seconds. C) Administer 10 breaths per minute, with each ventilation lasting 2 seconds. D) Give the patient 24 breaths per minute, with special attention to allowing for adequate exhalation.
The fibers that carry electrical impulses directly to ventricular muscle cells are the:
A) Purkinje's network B) Fascicles network C) Bundle network D) Systemic network
You arrive on the scene of a motor vehicle collision. Walking toward you is the unrestrained driver of the vehicle that sustained moderate front-end damage. The patient complains of some back pain, but is walking around after the crash and does not appear to be suffering from any neurologic deficits. Although he answers your questions appropriately, he keeps asking you, "What happened?" What is your initial action in caring for this patient?
A) Perform the primary assessment B) Obtain the patient's vital signs C) Look for injuries to the patient's head D) Initiate spine motion restriction precautions
____ are arthropods that envenom humans not by biting, but by stinging with a specialized apparatus called a telson.
A. Mollusca B. Scorpions C. Anemones D. Sea wasps