ATI LPN
Neurological Assessment Questions Questions
Question 1 of 5
Which of the following does NOT describe the autonomic nervous system?
Correct Answer: C
Rationale: ANS uses two neurons (pre- and postganglionic) and ganglia, not one. [Level: Comprehension]
Question 2 of 5
A transmitter substance released from a presynaptic neuron activates a second messenger G-protein system in the postsynaptic neuron. Which one of the following postsynaptic responses to the transmitter substance is NOT a possible outcome?
Correct Answer: D
Rationale: G-protein activation can open ion channels, activate cAMP/cGMP, or trigger gene transcription, but not directly close ion channels. TMP13 pp. 583-584
Question 3 of 5
The pathway of which system crosses in the ventral white commissure of the spinal cord within a few segments of entry and then courses to the thalamus contralateral to the side of the body from which the signal originated?
Correct Answer: A
Rationale: The anterolateral system crosses in the ventral white commissure near entry, ascending contralaterally. TMP13 pp. 616-617
Question 4 of 5
Which of the following is the basis for referred pain?
Correct Answer: D
Rationale: Convergence of visceral and somatic pain signals onto dorsal horn neurons causes referred pain. TMP13 p. 626
Question 5 of 5
An input neuron to a diverging circuit causes the membrane potential of a target neuron to change from -65 millivolts to -55 millivolts. Which of the following best describes this change in membrane potential (in millivolts)?
Correct Answer: A
Rationale: A depolarizing shift from -65 to -55 mV is an excitatory postsynaptic potential of +10 mV. TMP13 p. 588