I2_MN [FBbt_00048109]

Motor neuron that innervates the muscle of first axillary 56 (I2), ipsilaterally (Ehrhardt et al., 2023). Its soma is found in the ventral mesothoracic neuromere (Ehrhardt et al., 2023). It has dense arbors in the ipsilateral anterior dorsal mesothoracic neuromere, including the wing neuropil, with some fibers extending slightly into the contralateral hemisphere (O’Sullivan et al., 2018; Ehrhardt et al., 2023). In the male, it plays a role in courtship song generation (O’Sullivan et al., 2018).
I2_MN I2_MN I2_MN

I2_MN

ID: FBbt_00048109

Adult Motor neuron Nervous system

Motor neuron that innervates the muscle of first axillary 56 (I2), ipsilaterally (Ehrhardt et al., 2023). Its soma is found in the ventral mesothoracic neuromere (Ehrhardt et al., 2023). It has dense arbors in the ipsilateral anterior dorsal mesothoracic neuromere, including the wing neuropil, with some fibers extending slightly into the contralateral hemisphere (O'Sullivan et al., 2018; Ehrhardt et al., 2023). In the male, it plays a role in courtship song generation (O'Sullivan et al., 2018).

O'Sullivan et al. (2018) say it is specific for pulse song, Ehrhardt et al. (2023) say sine song.

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## Classification

Relationships

Alternative Names

Synonym Scope Reference
i2 exact synonym Bates et al., 2025
i2 MN exact synonym Berg et al., 2025
i2 MN exact synonym doi_10_7554_eLife_97766_1
i2 MN exact synonym O’Sullivan et al., 2018
I2_MN exact synonym Ehrhardt et al., 2023
i2 MN exact synonym

List all available images of I2_MN (3 total)

Thumbnail Name Tags
TBD (MANC:10145) Motor_neuron, lineage_16_NB1-1, primary_neuron, Glutamatergic, Adult
TBD (MANC:14390) Motor_neuron, lineage_16_NB1-1, primary_neuron, Glutamatergic, Adult
TBD (MANC:14390) Motor_neuron, lineage_16_NB1-1, primary_neuron, Glutamatergic, Adult
TBD (MANC:14390) Motor_neuron, lineage_16_NB1-1, primary_neuron, Glutamatergic, Adult
i2 MN_L (MaleCNS:800381) Motor_neuron, lineage_16_NB1-1, Adult

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Expression patterns overlapping I2_MN (1 total)

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P{GMR42H07-GAL4} expression pattern Expression_pattern

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Transgene expression in I2_MN (1 total)

Thumbnail Name Tags
P{GMR42H07-GAL4} expression pattern Expression_pattern

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Downstream connectivity classes for I2_MN (76 total)

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Upstream connectivity classes for I2_MN (384 total)

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