Crossword clues for receptor
receptor
Longman Dictionary of Contemporary English
Douglas Harper's Etymology Dictionary
mid-15c., from Old French receptour or directly from Latin receptor, agent noun from recipere (see receive). Medical use from 1900.
Wiktionary
n. 1 (context biochemistry medicine English) A protein on a cell wall that binds with specific molecules so that they can be absorbed into the cell in order to control certain functions. 2 (context biology English) Any specialized cell or structure that responds to sensory stimuli.
WordNet
n. a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response
an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation [syn: sense organ, sensory receptor] [ant: effector]
Wikipedia
Receptor may refer to:
- Sensory receptor, in physiology, any structure which, on receiving environmental stimuli, produces an informative nerve impulse
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Receptor (biochemistry), in biochemistry, a protein molecule that receives and responds to a neurotransmitter, or other substance
- Cell surface receptor, a receptor on the outer surface of a cell membrane, that takes part in communication between the cell and the outside world
- Nuclear receptor, a receptor found within cells that is responsible for sensing steroid and thyroid hormones and certain other molecules
- Immune receptor, a receptor that occurs on the surface of immunocytes and binds to antigens
- Receiver (radio), a device for the reception of electromagnetic signals
In biochemistry and pharmacology, a receptor is a protein- molecule that receives chemical-signals from outside a cell. When such chemical-signals bind to a receptor, they cause some form of cellular/tissue-response, e.g. a change in the electrical-activity of a cell. In this sense, a receptor is a protein-molecule that recognises and responds to endogenous-chemical signals, e.g. an acetylcholine-receptor recognizes and responds to its endogenous-ligand, acetylcholine. However, sometimes in pharmacology, the term is also used to include other proteins that are drug-targets, such as enzymes, transporters and ion-channels.
Receptor- proteins are embedded in all cells' plasmatic-membranes; facing extracellular-( cell surface receptors), cytoplasmic (cytoplasmic-receptors), or in the nucleus ( nuclear receptors). A molecule that binds to a receptor is called a ligand, and can be a peptide (short-protein) or another small molecule such as a neurotransmitter, hormone, pharmaceutical-drug, toxin, or parts of the outside of a virus or microbe. The endogenously designated-molecule for a particular receptor is referred to as its endogenous-ligand. E.g. the endogenous-ligand for the nicotinic-acetylcholine receptor is acetylcholine but the receptor can also be activated by nicotine and blocked by curare.
Each receptor is linked to a specific cellular-biochemical pathway. While numerous receptors are found in most cells, each receptor will only bind with ligands of a particular structure, much like how locks will only accept specifically shaped-keys. When a ligand binds to its corresponding receptor, it activates or inhibits the receptor's associated-biochemical pathway.
Usage examples of "receptor".
It also prefers the savor of those who have allowed their receptor planes to tarnish with succulent trace elements, spewed up by the hot accretion disk below.
But to get going again, the receptors receive the beam and from them the power is sent to the accumulators, where it is stored.
Nadia brought in meat and vegetables and stored them away, Stevens attacked the problem of constructing the pair of tight-beam, auto-dirigible transmitter and receptor units which would connect his great turbo-alternator to the accumulators of their craft, wherever it might be in space.
The assay involves using a radioactive drug which binds quantitatively to the acetylcholine receptor, the amount of radioactivity bound being proportional to the amount of receptor present.
The various appurtenances and projections of the complex molecules apparently adhere to different molecular receptors in the nasal mucosa, and the detectors for all the functional groups combine to put together a kind of collective olfactory image of the molecule.
Psych that sometimes the sensory receptors send impulses straight to the amygdala, which controls emotional responses, bypassing the hypothalamus, which processes and relays the information to the brain.
Suspended before the face of the sun, the solaser would open like a fan, suck in with its receptors the chaotic, full-spectrum radiation, and compress it into a monochromatic battering ram.
Changes in the entry of calcium ions, or the phosphorylation of membrane constituents, or the activation of NMDA receptors, all seem plausible ways of bringing about a temporary change in the electrical properties of a cell, but what makes the change persist -what puts the L into LTP - should be the important question, if LTP is really to serve as a model for long-term memory.
It is thought, for example, that phytoestrogens may block access to estrogen receptors by such procarcinogenic estrogens as estradiol.
Gentle lambent nerve impulses from the receptor cells now flowed along the strand to a more standard semiorganic processor that Renne carried in her jacket pocket.
By the mid-1970s, they had shown that during habituation in the isolated ganglion there was a steady decrease in the amount of serotonin released from the sensory presynaptic terminal, without there being any change in the responsiveness of the postsynaptic serotonin receptors.
There was a small, black GD stim box in front of him with leads running to implanted spike receptors in his forearm.
There was a stim block strapped to each wrist with lines going to a switchboard of receptors and a row of timedose dermals running all the way up to his biceps.
Moreover, it was a receptor subtype with completely new binding characteristics.
DNA coding sequence of the D4 receptor, a forty-eight base-pair sequence that controls clozapine and spiperone binding, especially when it appears as an eightfold repeat.