ATI RN
Questions About the Nervous System Questions
Question 1 of 5
regarding the innervation of the bladder
Correct Answer: A
Rationale: Parasympathetic innervation via pelvic splanchnic nerves (S2-S4) relaxes the sphincter and contracts the detrusor for urination. Sympathetic innervation (T11-L2, not L3-L4) inhibits the bladder, and sensation travels via both systems.
Question 2 of 5
In the spinal cord:
Correct Answer: A
Rationale: Brown-Sequard syndrome (cord hemisection) causes ipsilateral motor/touch/proprioception loss (corticospinal/dorsal columns) and contralateral pain/temperature loss (spinothalamic). The cord ends at L1-L2, and corticospinal is key.
Question 3 of 5
All of the following are branches of the ophthalmic division of the trigeminal nerve EXCEPT:
Correct Answer: B
Rationale: The infraorbital nerve is a maxillary (V2) branch, not ophthalmic (V1). Lacrimal, supraorbital, and infratrochlear are V1 branches.
Question 4 of 5
Regarding the speech centres
Correct Answer: D
Rationale: Damage to Broca’s area (frontal lobe) causes motor (expressive) aphasia. It’s typically left-sided regardless of handedness, anterior, and Wernicke’s handles comprehension.
Question 5 of 5
Where does the superior cerebral vein lie?
Correct Answer: C
Rationale: Superior cerebral veins lie in the subarachnoid space (arachnoid mater), draining into the superior sagittal sinus.