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单词 receptor
释义

Definition of receptor in English:

receptor

noun rɪˈsɛptəriˈsɛptər
Physiology
  • 1An organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve.

    the retina of the octopus has up to 20 million light receptors
    Example sentencesExamples
    • But sharks also detect their prey with sensory receptors that run along their sides.
    • However, they have some ability to sense light through receptors in the epidermis.
    • In the sea, the krill schools use their highly developed sensory receptors to find food.
    • All are viewed dispassionately, the heart as a pump, the brain as a network of neural tissues, the eye as a receptor of visual stimuli.
    • Our own skin contains a battery of touch receptors that produce nerve signals when pressed.
    • In the special sense organs, such as the eye and the ear, highly specialized receptors respond to light and sound.
    1. 1.1 A region of tissue, or a molecule in a cell membrane, which responds specifically to a particular neurotransmitter, hormone, antigen, or other substance.
      when viruses succeed in binding to cell membrane receptors they still have to enter the cell before they can replicate
      Example sentencesExamples
      • Platelet membranes bear a higher density of receptors per surface area than any other blood cell.
      • They can also alter circulating estrogen and androgen levels and can affect hormone receptors.
      • Finally, the presence of a specific receptor in the target tissue is required for a hormone to have its effect.
      • The heaviest people in his study had fewer dopamine receptors than the lightest.
      • Cells receive their instructions from the body through hormones and neurotransmitters that bind to receptors on their surface.
      • When the neurotransmitter binds with the receptor, the next cell responds accordingly.
      • The neurotransmitter and receptor are specific to each other, like a lock and key.
      • Hormones work by docking with a specific receptor on a cell, which then responds by turning on genes.
      • The interaction of hormones and their associated receptors is highly specific.

Origin

Early 20th century: coined in German from Latin receptor, from recept- 'taken back', from the verb recipere (see receive).

Rhymes

inceptor, preceptor, sceptre (US scepter)
 
 

Definition of receptor in US English:

receptor

nounrēˈseptərriˈsɛptər
Physiology
  • 1An organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve.

    the retina of the octopus has up to 20 million light receptors
    Example sentencesExamples
    • In the special sense organs, such as the eye and the ear, highly specialized receptors respond to light and sound.
    • All are viewed dispassionately, the heart as a pump, the brain as a network of neural tissues, the eye as a receptor of visual stimuli.
    • But sharks also detect their prey with sensory receptors that run along their sides.
    • In the sea, the krill schools use their highly developed sensory receptors to find food.
    • Our own skin contains a battery of touch receptors that produce nerve signals when pressed.
    • However, they have some ability to sense light through receptors in the epidermis.
    1. 1.1 A region of tissue, or a molecule in a cell membrane, which responds specifically to a particular neurotransmitter, hormone, antigen, or other substance.
      when viruses succeed in binding to cell membrane receptors they still have to enter the cell before they can replicate
      Example sentencesExamples
      • The interaction of hormones and their associated receptors is highly specific.
      • They can also alter circulating estrogen and androgen levels and can affect hormone receptors.
      • Hormones work by docking with a specific receptor on a cell, which then responds by turning on genes.
      • Cells receive their instructions from the body through hormones and neurotransmitters that bind to receptors on their surface.
      • Platelet membranes bear a higher density of receptors per surface area than any other blood cell.
      • When the neurotransmitter binds with the receptor, the next cell responds accordingly.
      • The heaviest people in his study had fewer dopamine receptors than the lightest.
      • Finally, the presence of a specific receptor in the target tissue is required for a hormone to have its effect.
      • The neurotransmitter and receptor are specific to each other, like a lock and key.

Origin

Early 20th century: coined in German from Latin receptor, from recept- ‘taken back’, from the verb recipere (see receive).

 
 
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更新时间:2024/12/23 10:54:06