ATI RN
ATI Neurological System Questions Questions
Question 1 of 5
A refractory period is___________.
Correct Answer: A
Rationale: The refractory period is a brief time following an action potential during which a neuron is unable to fire another impulse. This period ensures that action potentials propagate in one direction and allows the neuron to reset its ion gradients. The refractory period is divided into the absolute refractory period, when no new action potentials can be generated, and the relative refractory period, when a stronger-than-usual stimulus is required to generate an action potential.
Question 2 of 5
The neuron processes that normally receives incoming stimuli are called:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
The olfactory area is found within the:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
You are instructing a patient who has multiple sclerosis about how dantrolene (Dantrium) will help control spasticity. Through which of the following pharmacologic actions is this drug effective in treating this manifestation?
Correct Answer: D
Rationale: Dantrolene, a peripherally acting muscle relaxant, acts directly on spastic muscles and inhibits muscle contraction by preventing the release of calcium in skeletal muscles. Anticholinergic drugs or muscarinic antagonist block acetylcholine at the neuromuscular junction. Baclofen, a centrally acting muscle relaxant, relieves spasticity by interrupting nerve signals from the spinal cord. Most drugs used to treat myasthenia gravis act by preventing the destruction of acetylcholine at the neuromuscular junction.
Question 5 of 5
You are conducting a cranial nerve assessment on a new patient. She cannot feel vibration of the tuning fork when the Weber test is performed. She exhibits a deficit of which cranial nerve?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.