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receptor    音标拼音: [ris'ɛptɚ]

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  • Receptor | Nerve Endings, Signaling Sensory Perception | Britannica
    Receptor, molecule, generally a protein, that receives signals for a cell Small molecules, such as hormones outside the cell or second messengers inside the cell, bind tightly and specifically to their receptors Binding is a critical element in effecting a cellular response to a signal and is
  • Human nervous system - Receptors, Signals, Pathways | Britannica
    Human nervous system - Receptors, Signals, Pathways: Receptors are biological transducers that convert energy from both external and internal environments into electrical impulses They may be massed together to form a sense organ, such as the eye or ear, or they may be scattered, as are those of the skin and viscera Receptors are connected to the central nervous system by afferent nerve
  • Receptor Definition Meaning | Britannica Dictionary
    receptor (noun) receptor rɪ ˈ sɛptɚ noun plural receptors Britannica Dictionary definition of RECEPTOR [count] biology : a nerve ending that senses changes in light, temperature, pressure, etc , and causes the body to react in a particular way
  • Receptor | cellular binding site | Britannica
    Other articles where receptor is discussed: drug: Receptors: Receptors are protein molecules that recognize and respond to the body’s own (endogenous) chemical messengers, such as hormones or neurotransmitters Drug molecules may combine with receptors to initiate a series of physiological and biochemical changes Receptor-mediated drug effects involve two distinct processes:
  • Receptive field | Physiology, Neural Networks Sensory Processing . . .
    Receptive field, region in the sensory periphery within which stimuli can influence the electrical activity of sensory cells The receptive field encompasses the sensory receptors that feed into sensory neurons and thus includes specific receptors on a neuron as well as collectives of receptors
  • Immune system - T Cells, Antigens, Receptors | Britannica
    Immune system - T Cells, Antigens, Receptors: T-cell antigen receptors are found only on the cell membrane For this reason, T-cell receptors were difficult to isolate in the laboratory and were not identified until 1983 T-cell receptors consist of two polypeptide chains The most common type of receptor is called alpha-beta because it is composed of two different chains, one called alpha and
  • Olfactory receptor | Anatomy, Function Signaling Pathways - Britannica
    Olfactory receptor, protein capable of binding odour molecules that plays a central role in the sense of smell (olfaction) These receptors are common to arthropods, terrestrial vertebrates, fish, and other animals In terrestrial vertebrates, including humans, the receptors are located on
  • Thermoreception - Temperature, Sensitivity, Receptors - Britannica
    Thermoreception - Temperature, Sensitivity, Receptors: The concept of thermoreceptors derives from studies of human sensory physiology, in particular from the discovery reported in 1882 that thermal sensations are associated with stimulation of localized sensory spots in the skin Detailed investigations revealed a distinction between warm spots and cold spots—that is, specific places in the
  • G protein-coupled receptor (GPCR) | Britannica
    G protein-coupled receptor (GPCR), protein located in the cell membrane that binds extracellular substances and transmits signals from these substances to an intracellular molecule called a G protein (guanine nucleotide-binding protein)
  • Receptor potential | physiology | Britannica
    Other articles where receptor potential is discussed: chemoreception: Signal transduction: The initial changes are called receptor potentials, and they are produced by the movement of positively charged ions (e g , sodium ions) into the cell through openings in the cell membrane called ion channels Thus, in order to stimulate a receptor cell, a chemical must cause particular ion channels to be…





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