Physiology and Structure of Three New Uropod Proprioceptors in …
1990年11月1日 · In this report we show that each of the three joints of the crayfish uropod possesses previously undescribed proprioceptors, and that these sense organs are capable of signalling position, velocity and direction of movement of each uropod segment.
Innervation Patterns of Fast and Slow Muscle in the Uropods of Crayfish
The innervation of 18 uropod and telson muscles in the crayfish has been studied in varying detail. Some muscles display purely phasic properties (short sarcomeres, electrically excitable membrane responses); others are strictly tonic (long sarcomeres, junctional potentials only, spontaneously active motor neurones); a few are mixed, but with ...
Morphology, performance and fluid dynamics of the crayfish …
2020年8月4日 · Relationship between uropod length and force production in rusty crayfish. Uropod length was adjusted by total body length; F x ( x -force) and F y ( y -force) are the forces generated in the dorsal–ventral and anterior–posterior planes, respectively, during the tail flip escape response.
The slow muscles in the uropod of crayfish, Procambarus clarkII
1990年1月1日 · Dual excitatory innervation of the crayfish () uropod adductor muscle, adductor exopodite (ADX), through different roots of the sixth abdominal ganglion, was confirmed histologically and electrophysiologically.
The uropod righting reaction of the crayfish - Springer
The uropod righting reaction of the crayfish, Procambarus clarkii, was investigated in response to stimulation of proprioceptors at the bases of the walking legs and to stimulation of the balance organs, the statocysts. 2. Tilting a platform beneath the legs of crayfish elicited movements of the exopodites of the uropods in the horizontal plane.
Statocysts and Statocyst Control of Motor Pathways in Crayfish …
Murayama M, Takahata M (1998b) Neuronal mechanisms underlying the facilitatory control of uropod steering behaviour during treadmill walking in crayfish. II.Modulation of uropod motoneurone excitation by leg proprioception.
Physiology and Structure of Three New Uropod Proprioceptors in …
1990年11月1日 · Three new chordotonal organs are described: APCO for the abdominal-proto-podite joint, PExCO for the protopodite-exopodite joint and PEnCO for the protopodite-endopodite joint of the crayfish...
The uropod righting reaction of the crayfish Procambarus clarkii ...
1989年9月1日 · When the crayfish Procambarus is rolled with legs not upon a substratum, uropod opener muscles on the lifted side are activated in co-contraction whereas antagonistic closer muscles on the same...
Neuronal Mechanisms Underlying Crayfish Steering Behaviour …
In this study, we used unilateral statocystectomy combined with cord hemisection experiments to investigate, in the crayfish Procambarus clarkii Girard, how the uropod steering response is controlled by a set of previously identified descending statocyst interneurones (Takahata & …
2019年4月22日 · lobster crayfish's salt water cousin rostrum pointed projection, protects eyes and brain underneath rostrum