ATI LPN
Neurology Exam Questions Questions
Question 1 of 5
The nervous system is the centre of all mental activity including all the following except
Correct Answer: C
Rationale: The nervous system governs mental activities like thinking, learning, and memory, but digestion is primarily controlled by the enteric nervous system and autonomic regulation, not mental activity.
Question 2 of 5
Which of the following is the correct sequence in a typical reflex arc:
Correct Answer: B
Rationale: A reflex arc sequence is: receptor detects stimulus, afferent neuron to CNS (integration center), efferent neuron to effector.
Question 3 of 5
The nerve that contains sensory fibers that are involved in hearing is:
Correct Answer: D
Rationale: Cranial nerve VIII (vestibulocochlear) carries auditory sensory fibers for hearing.
Question 4 of 5
One type of bipolar cells contains a special receptor, mGluR6, which is sign reversing (the cell hyperpolarizes when glutamate binds to this receptor). When the drug APB is applied to the retina, the response of the neurons containing this receptor is blocked. Which of the following results would you expect from the application of APB to the retina?
Correct Answer: D
Rationale: mGluR6 is on ON-bipolar cells; APB (an agonist) blocks their response, making ON-center ganglion cells unresponsive to light onset, mimicking OFF-center cells.
Question 5 of 5
The concept of the receptive field depends on the fact that:
Correct Answer: D
Rationale: Receptive fields define how neurons respond to specific retinal stimuli with membrane potential changes, forming the basis of visual processing.