receptor

American  

[ri-sep-ter] / rɪˈsɛp tər /

noun

1. Physiology. an end organ or a group of end organs of sensory or afferent neurons, specialized to be sensitive to stimulating agents, as touch or heat.

2. Cell Biology. any of various specific protein molecules in surface membranes of cells and organelles to which complementary molecules, as hormones, neurotransmitters, antigens, or antibodies, may become bound.

3. the panlike base of a stall shower.

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receptor British  

/ rɪˈsɛptə /

noun

1. physiol a sensory nerve ending that changes specific stimuli into nerve impulses

2. any of various devices that receive information, signals, etc

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receptor Scientific  

/ rĭ-sĕp′tər /

1. A nerve ending or other structure in the body, such as a photoreceptor, specialized to sense or receive stimuli. Skin receptors respond to stimuli such as touch and pressure and signal the brain by activating portions of the nervous system. Receptors in the nose detect the presence of certain chemicals, leading to the perception of odor.

2. A structure or site, found on the surface of a cell or within a cell, that can bind to a hormone, antigen, or other chemical substance and thereby begin a change in the cell. For example, when a mast cell within the body encounters an allergen, specialized receptors on the mast cell bind to the allergen, resulting in the release of histamine by the mast cell. The histamine then binds to histamine receptors in other cells of the body, which initiate the response known as inflammation as well as other responses. In this way, the symptoms of an allergic reaction are produced. Antihistamine drugs work by preventing the binding of histamine to histamine receptors.

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Etymology

Origin of receptor

1400–50; late Middle English receptour < Old French < Latin receptor. See reception, -tor

Example Sentences

One promising target involves interactions between tumor glycans and receptors on immune cells.

From Science Daily

Dopamine receptor agonists have shown benefits in the past but often caused side effects because they affected large areas of the brain.

From Science Daily

Using cryo-EM, researchers from the Laboratory of Molecular Electron Microscopy studied the receptor in a biochemical setting designed to closely resemble its native milieu.

From Science Daily

While those therapies focus on blocking a single pain-related pathway, SN101 cells naturally express all major pain receptors and ion channels.

From Science Daily

This receptor helps the modified cell identify unique markers or "flags" on cancer cells and destroy them.

From Science Daily