ATI LPN
Medical Surgical Neurology Questions
Question 1 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 2 of 5
Lobe that contains the primary motor area that enables voluntary control of skeletal muscle movements:
Correct Answer: D
Rationale: The frontal lobe houses the primary motor cortex, controlling voluntary skeletal muscle movements.
Question 3 of 5
What structure do retinal ganglion cells come from during development?
Correct Answer: D
Rationale: Retinal ganglion cells originate in the diencephalon, specifically the optic vesicle, which forms the retina.
Question 4 of 5
What happens in a photoreceptor cell (a rod, for example) in response to a light stimulus?
Correct Answer: C
Rationale: Light reduces cGMP, closing Na⁺ channels, hyperpolarizing photoreceptors by reducing cation influx.
Question 5 of 5
The opening of K+ channels produces a in hair cells because of the concentration of K+ in the endolymph and the endocochlear potential.
Correct Answer: D
Rationale: High K⁺ in endolymph and a positive endocochlear potential (~+80 mV) drive K⁺ influx, depolarizing hair cells when channels open.