Question

in the cns, clusters of gray matter containing cell bodies are called:
a pyramids
b ganglia
c tracts
d nuclei
e peduncles

Explanation:

• Pyramids: Refer to specific structures in the medulla oblongata related to motor pathways, not clusters of gray matter with cell bodies.
• Ganglia: Found in the PNS (peripheral nervous system), not CNS (central nervous system).
• Tracts: Composed of nerve fibers (axons) in the CNS, not cell bodies.
• Nuclei: In the CNS, clusters of gray matter (containing neuron cell bodies) are called nuclei.
• Peduncles: Composed of nerve fibers, not cell - body - containing gray matter clusters.

Answer:

D. nuclei