chemoreceptors


Also found in: Dictionary, Thesaurus, Encyclopedia.

chemoreceptors

Nerve endings stimulated to produce nerve impulses by contact with chemical substances or as a result of changes in the local concentration of chemical substances. The receptors for smell and taste, those for oxygen in the carotid bodies and those for glucose in the pancreas are of this type.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Chemoreceptors are Group IV afferents which are sensitive not only to acid metabolites in muscles but also to prostaglandins and bradykinin.
Mucus is temporally the first cue of an approaching anemone and would activate chemoreceptors only.
Gauda, Elizabeth Cristofalo, and Jeanne Nunez, "Peripheral arterial chemoreceptors and sudden infant death syndrome," Respiratory Physiology & Neurobiology 157, no.
Evaluating the importance of the carotid chemoreceptors in controlling breathing during exercise in man.
The central pathways involve the carotid body chemoreceptors, the inspiratory neurons in the medulla and the higher cortex.
Respiration during sleep is controlled by the interaction between brainstem centers, respiratory apparatus (inspiratory musculature, pulmonary parenchyma) and chemoreceptors. Tight correlation between the ventilatory cycle duration and left ventricular ejection fraction has led to a conclusion that low cardiac output and timely transport of the chemostimuli to the chemoreceptors are responsible for the prolonged ventilatory cycle in CHF patients (70).
Taste buds on the tongue located in the grooves between the papillae are also chemoreceptors that work similarly to the olfactory receptors in the nasal cavity.
Recently, our understanding of the function of non-CB chemoreceptors was greatly expanded by the demonstration that the TRPA1 channel is an essential element for [O.sub.2] sensing in non-CB chemoreceptors.
Feeding behavior or preference for particular host species depends on the various sensilla present on the insects' mouthparts, including olfactory, gustatory, and mechanosensory ones, which are involved in sensory perception via chemoreceptors (Dey et al.
Currently there is little data on the effect of age on the sensitivity of peripheral chemoreceptors to carbon dioxide.
It receives afferent signals from peripheral and central chemoreceptors, stretch receptors in lung, and higher cortical centers [6].
Specifically, acid sensitive chemoreceptors, present in both the peripheral carotid and aortic bodies and the central nervous system, measure changes in hydrogen ions secondary to increases in C[O.sub.2] tension.