ATI LPN
Neurological Questions Questions
Question 1 of 5
Which of these cells are not a type of neuroglia found in the CNS:
Correct Answer: C
Rationale: Schwann cells are neuroglia in the PNS that myelinate axons, whereas astrocytes, microglia, ependymal cells, and oligodendrocytes are CNS neuroglia.
Question 2 of 5
Which one of the following is the correct sequence of nerves that exit the spinal cord, going from superior to inferior:
Correct Answer: B
Rationale: Spinal nerves exit in order: cervical (neck), thoracic (chest), lumbar (lower back), sacral (pelvis), from superior to inferior.
Question 3 of 5
A difference between rods and cones is:
Correct Answer: C
Rationale: Rods and cones both hyperpolarize to light and use retinal, but they have distinct opsins (e.g., rhodopsin in rods, photopsins in cones).
Question 4 of 5
In comparison to other G-protein coupled second messenger signaling pathways (like metabotropic neurotransmitter receptors) the situation in photopigment transduction is different because:
Correct Answer: C
Rationale: In phototransduction, light reduces cGMP (second messenger), unlike most G-protein pathways where it increases, closing Na⁺ channels.
Question 5 of 5
What are the first cells in the auditory system to fire action potential?
Correct Answer: C
Rationale: Spiral ganglion neurons fire action potentials in response to inner hair cell glutamate release, as hair cells do not generate action potentials.