An embryologist is looking at a cross-section of a mouse embryo. She notices that flanking either side of the neural tube (the rudiment of the spinal chord) are eggplant-shaped structures that contain many cell bodies. These structures are most likely:
ganglia.
nerve cords.
nerves.
myelin sheaths.
axon hillocks.
Ganglia are the cell bodies of neurons with axons that are connected with sensory endings in the periphery, such as in the skin, and that extend into the CNS through the dorsal nerve root.
