ATI LPN
Neurological Questions Questions
Question 1 of 5
The substance that is released at axonal endings to propagate a nervous impulse is called:
Correct Answer: C
Rationale: Neurotransmitters are chemicals released from axon terminals into the synapse to transmit signals to the next cell.
Question 2 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 3 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 4 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.
Question 5 of 5
A foot fetish of a sexual nature might be explained by which of the following:
Correct Answer: D
Rationale: The somatosensory cortex (not motor) places genital and foot areas adjacent, potentially linking their sensory processing.