ATI LPN
Quizlet Adult Medical Surgical Head Injury Monitoring Neurological Status Questions
Question 1 of 5
Which information about the patient who had a subarachnoid hemorrhage is most important to communicate to the health care provider?
Correct Answer: B
Rationale: Hypotension (90/50) signals shock or rebleed in SAH, requiring urgent intervention. Others are expected findings. [Level: Analysis]
Question 2 of 5
Neurons communicate with each other by releasing chemical messengers known as:
Correct Answer: C
Rationale: Neurotransmitters cross synapses to transmit signals. Hormones are systemic, antibodies immune, enzymes catalytic. [Level: Knowledge]
Question 3 of 5
In the peripheral nervous system, Schwann cells wrap around the:
Correct Answer: C
Rationale: Schwann cells wrap axons, leaving nodes of Ranvier exposed for signal regeneration. [Level: Knowledge]
Question 4 of 5
The refractory period following an action potential is important for:
Correct Answer: C
Rationale: The refractory period ensures unidirectional signal travel by preventing immediate re-firing. [Level: Comprehension]
Question 5 of 5
Which synapse is commonly found in the central nervous system and allows for bidirectional communication between neurons?
Correct Answer: B
Rationale: Electrical synapses, common in CNS, allow bidirectional ion flow via gap junctions. [Level: Knowledge]