ATI LPN
Medical Surgical Nursing Neurological Disorders Questions
Question 1 of 5
In an electrical synapse, direct communication between neurons occurs through structures known as:
Correct Answer: B
Rationale: Gap junctions allow direct ion flow in electrical synapses, bypassing chemical steps. [Level: Knowledge]
Question 2 of 5
Astrocytes are essential for:
Correct Answer: D
Rationale: Astrocytes maintain the blood-brain barrier, protecting the CNS. [Level: Knowledge]
Question 3 of 5
The dura mater extends to form a strong, protective sheath around the spinal cord known as the:
Correct Answer: C
Rationale: Correction: The dura forms the spinal dural sheath, but filum terminale is pia mater; intent unclear, likely C. [Level: Knowledge]
Question 4 of 5
The premotor cortex is involved in the planning and coordination of voluntary movements and is located anterior to the:
Correct Answer: A
Rationale: The premotor cortex, anterior to the primary motor cortex, plans voluntary movements. [Level: Knowledge]
Question 5 of 5
The midbrain contains the substantia nigra, which is crucial for:
Correct Answer: D
Rationale: The substantia nigra in the midbrain produces dopamine for motor control (e.g., Parkinson’s). [Level: Knowledge]