tt_MN [FBbt_00007406]

Motor neuron that innervates the mesothoracic extracoxal trochanter depressor muscle 66 (tergotrochanteral muscle), ipsilaterally (Baird et al., 1993; Ehrhardt et al., 2023). Its large cell body is located laterally in the posterior ventral accessory mesothoracic neuromere (Baird et al., 1993; Phelan et al., 1996). Within the ventral nerve cord, it forms two main branches, one that extends medially, then anteromedially, reaching the midline and another that extends posteriorly (Baird et al., 1993). It is electrically synapsed to the giant fiber neuron, which it contacts via its medial branch, and it functions in jump response escape behavior (Baird et al., 1993; Phelan et al., 1996). Its axon exits the ventral nerve cord via the posterior dorsal mesothoracic nerve (Baird et al., 1993). In the male, it plays a role in pulse song generation (O’Sullivan et al., 2018).
Tags:
tt_MN tt_MN tt_MN tt_MN

tt_MN

ID: FBbt_00007406

Adult Motor neuron Nervous system

Motor neuron that innervates the mesothoracic extracoxal trochanter depressor muscle 66 (tergotrochanteral muscle), ipsilaterally (Baird et al., 1993; Ehrhardt et al., 2023). Its large cell body is located laterally in the posterior ventral accessory mesothoracic neuromere (Baird et al., 1993; Phelan et al., 1996). Within the ventral nerve cord, it forms two main branches, one that extends medially, then anteromedially, reaching the midline and another that extends posteriorly (Baird et al., 1993). It is electrically synapsed to the giant fiber neuron, which it contacts via its medial branch, and it functions in jump response escape behavior (Baird et al., 1993; Phelan et al., 1996). Its axon exits the ventral nerve cord via the posterior dorsal mesothoracic nerve (Baird et al., 1993). In the male, it plays a role in pulse song generation (O'Sullivan et al., 2018).

Open in VFB 3D Browser →
## Classification

Relationships

Alternative Names

Synonym Scope Reference
tergotrochanteral muscle motor neuron exact synonym
tt_MN exact synonym Ehrhardt et al., 2023
tt MN exact synonym O’Sullivan et al., 2018
TTMn exact synonym Uthaman et al., 2008
tergal depressor of trochanter muscle motor neuron exact synonym
TDTmn exact synonym Trimarchi and Schneiderman, 1994
TTMn exact synonym Berg et al., 2025
tergotrochanter_extensor_TT exact synonym Bates et al., 2025
TTMn exact synonym Phelan et al., 1996
TTMn exact synonym doi_10_7554_eLife_97766_1
tergotrochanter_extensor_TT_PDMN exact synonym Bates et al., 2025