ATI RN
Test Questions on Autonomic Nervous System Questions
Question 1 of 5
Pyramidal diseases is characterized by:
Correct Answer: C
Rationale: Pyramidal (upper motor neuron) disease causes weakness (C), spasticity, and hyperreflexia, not tremor (A, basal ganglia), wasting (B, lower motor), or hypotonia (D, cerebellar). C is correct.
Question 2 of 5
Which lobe of the cerebral cortex is responsible for generating motor commands?
Correct Answer: D
Rationale: The frontal lobe (D) contains the primary motor cortex (Brodmann area 4), responsible for voluntary motor commands. The temporal (A) processes auditory and memory, parietal (B) sensory integration, and occipital (C) vision. D is correct.
Question 3 of 5
What type of glial cell is responsible for filtering blood to produce CSF at the choroid plexus?
Correct Answer: A
Rationale: Ependymal cells (A) in the choroid plexus filter blood to produce cerebrospinal fluid (CSF). Astrocytes (B) support neurons, oligodendrocytes (C) myelinate CNS axons, and Schwann cells (D) myelinate PNS axons. A is correct.
Question 4 of 5
Which of the following cavities contains a component of the central nervous system?
Correct Answer: C
Rationale: The central nervous system (CNS) consists of the brain and spinal cord. The cranial cavity houses the brain, making it the correct choice. The abdominal cavity contains digestive organs, the pelvic cavity contains reproductive and urinary organs, and the thoracic cavity contains the heart and lungs—none of which include CNS components.
Question 5 of 5
Which of the following substances is least able to cross the blood-brain barrier?
Correct Answer: D
Rationale: The blood-brain barrier (BBB) restricts large or charged substances. White blood cells are large and typically cannot cross the BBB unless it’s compromised. Water, sodium ions (via channels), and glucose (via transporters) can cross more readily.