Complex sentence: The sensory neurons send this information via their axons to the antennal lobe (5), where they synapse with other neurons in semidelineated (with membrane boundaries) structures called glomeruli.
Split into simpler sentences: The sensory neurons send this information via their axons to the antennal lobe (5). Inside the antennal lobe they synapse with other neurons in semidelineated (with membrane boundaries) structures called glomeruli.