The Emetic Reflex Arc

2003 ◽  
pp. 1-10 ◽  
Author(s):  
J. Donnerer
Keyword(s):  
Reflex Arc

Supraspinal inhibition of a cutaneous vascular reflex in the cat

1964 ◽  
Vol 207 (2) ◽  
pp. 303-307 ◽  
Author(s):  
B. J. Prout ◽  
J. H. Coote ◽  
C. B. B. Downman
Keyword(s):  
Carotid Sinus ◽  
Spinal Reflexes ◽  
Descending Pathways ◽  
Skin Response ◽  
Reflex Arc ◽  
Vascular Reflex ◽  
Carotid Sinus Nerve Stimulation ◽  
Sympathetic Discharge ◽  
Stimulation Of ◽  
Cerebellar Stimulation

In cats anesthetized with chloralose-urethane mixture, stimulation of an afferent nerve evoked a vasoconstrictor reflex (VCR) and a galvanic skin response (GSR) in the pads of the feet. Stimulation of the ventromedial medullary reticular substance at the level of the obex abolished the VCR and the GSR. VCR could also be reduced by occlusion during prolonged stimulation of another spinal or visceral afferent pathway. Medulla stimulation was effective without itself causing a sympathetic discharge to the paw, showing that inhibition rather than occlusion was operative. Anterior cerebellar stimulation also inhibited the VCR. Carotid sinus nerve stimulation did not abolish the VCR. It is concluded that the effective mechanism includes a bulbospinal inhibitory path projecting on a spinal vasoconstrictor reflex arc. This arrangement is similar to the descending pathways inhibiting other spinal reflexes but the VCR-inhibitory path can be activated independently of them.

Intragastric administration of capsiate, a transient receptor potential channel agonist, triggers thermogenic sympathetic responses

2011 ◽  
Vol 110 (3) ◽  
pp. 789-798 ◽  
Author(s):  
Kaori Ono ◽  
Masako Tsukamoto-Yasui ◽  
Yoshiko Hara-Kimura ◽  
Naohiko Inoue ◽  
Yoshihito Nogusa ◽  
...  
Keyword(s):  
Sympathetic Nerve ◽  
Transient Receptor Potential ◽  
Trp Channels ◽  
Low Frequency ◽  
Receptor Potential ◽  
Transient Receptor Potential Channel ◽  
Intragastric Administration ◽  
Brown Adipose ◽  
Reflex Arc ◽  
Transient Receptor

The sympathetic thermoregulatory system controls the magnitude of adaptive thermogenesis in correspondence with the environmental temperature or the state of energy intake and plays a key role in determining the resultant energy storage. However, the nature of the trigger initiating this reflex arc remains to be determined. Here, using capsiate, a digestion-vulnerable capsaicin analog, we examined the involvement of specific activation of transient receptor potential (TRP) channels within the gastrointestinal tract in the thermogenic sympathetic system by measuring the efferent activity of the postganglionic sympathetic nerve innervating brown adipose tissue (BAT) in anesthetized rats. Intragastric administration of capsiate resulted in a time- and dose-dependent increase in integrated BAT sympathetic nerve activity (SNA) over 180 min, which was characterized by an emergence of sporadic high-activity phases composed of low-frequency bursts. This increase in BAT SNA was abolished by blockade of TRP channels as well as of sympathetic ganglionic transmission and was inhibited by ablation of the gastrointestinal vagus nerve. The activation of SNA was delimited to BAT and did not occur in the heart or pancreas. These results point to a neural pathway enabling the selective activation of the central network regulating the BAT SNA in response to a specific stimulation of gastrointestinal TRP channels and offer important implications for understanding the dietary-dependent regulation of energy metabolism and control of obesity.

scholarly journals The refractory phase in a reflex arc

1922 ◽  
Vol 56 (6) ◽  
pp. 426-443 ◽  
Author(s):  
E. D. Adrian ◽  
J. M. D. Olmsted
Keyword(s):  
Reflex Arc ◽  
Refractory Phase

THE CORRELATION BETWEEN INTELLIGENCE AND SPEED IN CONDUCTION OF THE NERVE IMPULSE IN A REFLEX ARC

Science ◽  
1928 ◽  
Vol 67 (1724) ◽  
pp. 41-43 ◽  
Author(s):  
L. E. Travis
Keyword(s):  
Nerve Impulse ◽  
Reflex Arc

Electrophysiologic characteristics of interoceptive reflex arc

1957 ◽  
Vol 44 (1) ◽  
pp. 765-770
Author(s):  
T. S. Lagutina
Keyword(s):  
Interoceptive Reflex ◽  
Reflex Arc

Direct Evidence of the Anterior Cruciate Ligament-Hamstring Reflex Arc in Humans

2001 ◽  
Vol 29 (1) ◽  
pp. 83-87 ◽  
Author(s):  
Eiichi Tsuda ◽  
Yoshihisa Okamura ◽  
Hironori Otsuka ◽  
Takashi Komatsu ◽  
Satoshi Tokuya
Keyword(s):  
Anterior Cruciate Ligament ◽  
Direct Evidence ◽  
Cruciate Ligament ◽  
Reflex Arc ◽  
Anterior Cruciate

Deep Inspiration-Provoked Cough: A Sign of Cough Reflex Arc Hypersensitivity

Lung ◽  
2021 ◽  
Author(s):  
Heikki O. Koskela ◽  
Hanna M. Nurmi ◽  
Woo-Jung Song
Keyword(s):  
Deep Inspiration ◽  
Cough Reflex ◽  
Reflex Arc
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