nictitating membrane - определение. Что такое nictitating membrane
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Что (кто) такое nictitating membrane - определение

TRANSPARENT OR TRANSLUCENT THIRD EYELID IN SOME ANIMALS
Third eyelid; Nictating membrane; Nictating Membrane; Nictating eyelid; Nictitating eyelid; Nicitating membrane; Inner eyelid; Palpebra tertia; Nictitating; Semilunar fold; Nictitation; Nictitating membranes; Nictitans
  • The nictitating membrane of a [[blue shark]]
  • medial]] [[canthus]]
  • [[Common goldeneye]] showing the transparent nictitating membrane characteristic of diving animals
  • Slow motion video of a [[common buzzard]] yawning while perched on an antenna, with nictitating membrane visible (deployed asynchronously on left and right eye).
  • The [[plica semilunaris of conjunctiva]] is a vestigial remnant of a nictitating membrane in humans.
  • The nictitating membrane (mid-blink) of a [[bald eagle]]
  • The nictitating membrane (completely closed) of a [[black crowned crane]], right eye
  • Second eyelid on a domestic dog
Найдено результатов: 454
nictitating membrane         
¦ noun Zoology a whitish membrane forming an inner eyelid in birds, reptiles, and some mammals.
Origin
C18: nictitating based on med. L. nictitat- 'blinked', frequentative of nictare.
Nictitating membrane         
The nictitating membrane (from Latin [to blink) is a transparent or translucent] third [[eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision. All Anura(tailless amphibians), and some reptiles, birds, and sharks have full nictitating membranes; in many mammals, a small, vestigial portion of the nictitating membrane remains in the corner of the eye.
third eyelid         
¦ noun informal term for nictitating membrane.
Nictitation         
·noun The act of Winking.
Bruch's membrane         
MEMBRANE IN THE EYE
Bruch membrane; Bruchs membrane; Lamina vitrea; Brooks membrane; Lamina basalis choroideae
Bruch's membrane is the innermost layer of the choroid of the eye. It is also called the vitreous lamina or Membrane vitriae, because of its glassy microscopic appearance.
Membrane protein         
  • ionic interactions]] with membrane lipids (''e.g.'' through a [[calcium ion]])
  • transmembrane proteins]]: 1. a single transmembrane [[α-helix]] ([[bitopic membrane protein]]) 2. a polytopic transmembrane α-helical protein 3. a polytopic transmembrane [[β-sheet]] protein <br/>The membrane is represented in light-brown.
PROTEINS THAT ARE PART OF, OR INTERACT WITH, BIOLOGICAL MEMBRANES
Membrane proteins; Bacterial outer membrane protein; Protein Function in Cell Membranes; Bacterial outer membrane proteins
Membrane proteins are common proteins that are part of, or interact with, biological membranes. Membrane proteins fall into several broad categories depending on their location.
Synthetic membrane         
  • Ceramic multicanal elements
SYNTHETICALLY CREATED MEMBRANE WHICH IS USUALLY INTENDED FOR SEPARATION PURPOSES IN LABORATORY OR IN INDUSTRY
Synthetic membranes; Polymeric membrane; Polymer membrane; Inorganic membrane; Inorganic membranes; Polymeric membranes; Cellulose ester membrane; Artificial membrane
An artificial membrane, or synthetic membrane, is a synthetically created membrane which is usually intended for separation purposes in laboratory or in industry. Synthetic membranes have been successfully used for small and large-scale industrial processes since the middle of twentieth century.
Membrane potential         
  • alt=Seven spheres whose radii are proportional to the radii of mono-valent lithium, sodium, potassium, rubidium, cesium cations (0.76, 1.02, 1.38, 1.52, and 1.67 Å, respectively), divalent calcium cation (1.00 Å) and mono-valent chloride (1.81 Å).
  • semipermeable]] lipid bilayer common to all living cells. It contains a variety of biological molecules, primarily proteins and lipids, which are involved in a vast array of cellular processes.
  • Equivalent circuit for a patch of membrane, consisting of a fixed capacitance in parallel with four pathways each containing a battery in series with a variable conductance
  • Reduced circuit obtained by combining the ion-specific pathways using the [[Goldman equation]]
  • alt=A schematic diagram of two beakers, each filled with water (light-blue) and a semipermeable membrane represented by a dashed vertical line inserted into the beaker dividing the liquid contents of the beaker into two equal portions. The left-hand beaker represents an initial state at time zero, where the number of ions (pink circles) is much higher on one side of the membrane than the other. The right-hand beaker represents the situation at a later time point, after which ions have flowed across the membrane from the high to low concentration compartment of the beaker so that the number of ions on each side of the membrane is now closer to equal.
  • Electric field (arrows) and contours of constant voltage created by a pair of oppositely charged objects. The electric field is at right angles to the voltage contours, and the field is strongest where the spacing between contours is the smallest.
  • Graph displaying an EPSP, an IPSP, and the summation of an EPSP and an IPSP
  • Ligand-gated calcium channel in closed and open states
  • alt=Schematic stick diagram of a tetrameric potassium channel where each of the monomeric subunits is symmetrically arranged around a central ion conduction pore. The pore axis is displayed perpendicular to the screen. Carbon, oxygen, and nitrogen atom are represented by grey, red, and blue spheres, respectively. A single potassium cation is depicted as a purple sphere in the center of the channel.
  • Facilitated diffusion in cell membranes, showing ion channels and [[carrier proteins]]
  • The sodium-potassium pump uses energy derived from ATP to exchange sodium for potassium ions across the membrane.
TYPE OF PHYSICAL QUANTITY
Transmembrane potential; Negative potential; Positive potential; Transmembrane potential difference; Membrane Potenial; Transmembrane voltage; Membrane potentials; Excitable membrane; Excitable cell; Membrane voltage; Excitable cell membrane; Cell excitability; Electrically excitable cell; Zombie muscle
Membrane potential (also transmembrane potential or membrane voltage) is the difference in electric potential between the interior and the exterior of a biological cell. That is, there is a difference in the energy required for electric charges to move from the internal to exterior cellular environments and vice versa, as long as there is no acquisition of kinetic energy or the production of radiation.
Biological membrane         
  • A fluid membrane model of the phospholipid bilayer.
SELECTIVELY PERMEABLE MEMBRANE THAT SEPARATES THE INTERIOR OF A CELL FROM THE EXTERNAL ENVIRONMENT OR CREATES INTRACELLULAR COMPARTMENTS BY SERVING AS A BOUNDARY BETWEEN ONE PART OF THE CELL AND ANOTHER
Membrane (biology); Biomembrane; Biological membranes; Membrane-bound; Phosphatidylethanolamine binding protein
A biological membrane, biomembrane or cell membrane is a selectively permeable membrane that separates the interior of a cell from the external environment or creates intracellular compartments by serving as a boundary between one part of the cell and another. Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions.
Lipid bilayer fusion         
  •  (2.)Illustration of content mixing assay based on fluorescence enhancement pair Tb<sup>3+</sup>/DPA.
  •  url = http://www.gbv.de/dms/ilmenau/toc/521845548.PDF
 }}</ref>
  •  (1.) Illustration of lipid mixing assay based on Förster resonance energy transfer.
  •  Schematic illustration of the process of fusion through stalk formation.
  •  (1.) Illustration of content mixing assay based on fluorescence quencing pair ANTS/DPX.
  •  (3.) Illustration of lipid mixing assay based on Fluorescence self-quenching.
THE MEMBRANE ORGANIZATION PROCESS THAT JOINS TWO LIPID BILAYERS TO FORM A SINGLE MEMBRANE.
Membrane fusion
In membrane biology, fusion is the process by which two initially distinct lipid bilayers merge their hydrophobic cores, resulting in one interconnected structure. If this fusion proceeds completely through both leaflets of both bilayers, an aqueous bridge is formed and the internal contents of the two structures can mix.

Википедия

Nictitating membrane

The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision. All Anura(tailless amphibians), and some reptiles, birds, and sharks have full nictitating membranes; in many mammals, a small, vestigial portion of the nictitating membrane remains in the corner of the eye. Some mammals, such as cats, camels, polar bears, seals and aardvarks, have full nictitating membranes. Often called a third eyelid or haw, it may be referred to in scientific terminology as the plica semilunaris, membrana nictitans, or palpebra tertia.