ATI LPN
Medical Surgical Neurology Questions
Question 1 of 5
The threshold potential is the membrane potential at which:
Correct Answer: A
Rationale: Threshold (~-55 mV) triggers Na+ channel opening, initiating an action potential. [Level: Knowledge]
Question 2 of 5
The largest nerve in the human body, the sciatic nerve, is an example of a:
Correct Answer: C
Rationale: The sciatic nerve carries both sensory and motor fibers, making it mixed. [Level: Knowledge]
Question 3 of 5
The outermost layer of the meninges, providing protection and cushioning for the brain, is called the:
Correct Answer: B
Rationale: The dura mater is the tough, outermost meningeal layer, protecting the CNS. [Level: Knowledge]
Question 4 of 5
The lateral ventricles are located within the cerebral hemispheres and are connected to the third ventricle by the:
Correct Answer: A
Rationale: The foramen of Monro connects lateral ventricles to the third ventricle. [Level: Knowledge]
Question 5 of 5
Broca's area, crucial for speech production and language expression, is typically found in the:
Correct Answer: A
Rationale: Broca’s area, in the left frontal lobe (typically), controls speech production. [Level: Knowledge]