ATI LPN
Medical Surgical Neurology Questions
Question 1 of 5
Which of the following statements about resting potential is true?
Correct Answer: D
Rationale: The sodium-potassium pump maintains the resting potential (-70 mV) by pumping 3 Na⁺ out and 2 K⁺ in, creating ion gradients across the membrane.
Question 2 of 5
The enteric division of the autonomic nervous system consists of neurons in the digestive tract, the gallbladder, and the
Correct Answer: C
Rationale: The enteric nervous system governs the digestive tract, gallbladder, and pancreas, regulating gastrointestinal function.
Question 3 of 5
The network of neurons that extends through the core of the brainstem and selects information that reaches the cerebral cortex during sleep is the
Correct Answer: C
Rationale: The reticular formation regulates arousal and filters sensory input to the cortex, influencing sleep and attention.
Question 4 of 5
Each cerebral hemisphere is divided into -------lobes,--------- of which have the same name as the bone over them.
Correct Answer: D
Rationale: Each cerebral hemisphere has four lobes (frontal, parietal, temporal, occipital), three of which (frontal, parietal, temporal) share names with the overlying skull bones.
Question 5 of 5
White matter refers to myelinated fibers in the:
Correct Answer: A
Rationale: White matter in the CNS consists of myelinated axons, giving it a white appearance, distinct from PNS structures or subsystems like ANS/SNS.