Uptake of extracellular materials by invagination of the plasma membrane to form a small membrane-bounded vesicle (early endosome). ( Figure 17-46)
a process by which a cell takes up material from its environment. The cell membrane folds inwards to take in material. It includes pinocytosis and phagocytosis.
the process in which a small patch of plasma membrane encloses particles that are near the cell surface.
uptake into a cell of large molecules and particles in which a segment of plasma membrane surrounds the substance, encloses it, and brings it in; includes phagocytosis, pinocytosis, and receptor-mediated endocytosis
(Greek, endon = within) The process of taking in materials from outside a cell in vesicles that arise by the inward folding ("invagination") of the plasma membrane.
The process by which cells capture and encapsulate foreign particles.
A process by which liquids or solid particles are taken up by a cell through invagination of the plasma membrane. (Contrast with exocytosis.)
Process by which liquids or small solid particles are taken into a cell in the form of small vesicles that are produced through the invagination of the cell membrane.
incorporation of materials into the cells by pinocytosis ("cell drinking") or phagocytosis ("cell eating").
The uptake of material from the environment by a cell by invagination of its plasma membrane.
The uptake of extracellular materials by a cell.
Uptake of material into a cell by an invagination of the plasma membrane and its internalization in a membrane-bounded vesicle. (See also pinocytosis and phagocytosis.)
The uptake by a cell of particles that are too large to diffuse through its wall.
refers to the process in which a cell internally recycles part of its own membrane; for example, neurotransmitter receptors or fused vesicle membrane in the presynaptic nerve terminal
(ehn'-do-sih-TO-sihs) The active process of bulk transport of material into a cell. It includes phagocytosis and pinocytosis.
The process by which extracellular molecules (including hormones) enter a cell.
The cellular uptake of macromolecules and particulate substances by localised regions of the plasma membrane that surround the substance and pinch off to form an intracellular vesicle.
EN-doe-si-TOE-sis The cell membrane's engulfing extracellular material. 93
Movement of materials from outside the cell to the inside by the creation of a vesicle to surround the material.
(EN-doe-sye-TOE-sis) A process cells use to engulf particles or liquid from their surroundings. It occurs when the cell surface membrane puckers inward, encircling the material, then pinches off, producing a vesicle inside the cell.
Mechanism by which specific molecules are ingested into the cell.
The incorporation of materials from outside the cell by the formation of vesicles in the plasma membrane. The vesicles surround the material so the cell can engulf it.
A method of ingestion of a foreign substance by a cell Half life The time required to reduce any amount of a radionuclide to half its initial level. Radioactivity is decaying exponentially (i.e., after 1 half life – 50% is left; 2 half lives – 25% is present; 3 half lives – 12.5% is present).
The process in which hormones enter cells.
The uptake by a cell of material from its environment by a process in which the cell surrounds the material and engulfs it with a vesicle formed by its plasma membrane.
Internalization of material by a cell, by phagocytosis or pinocytosis.
At external membrane surface, molecules are enclosed by invaginations of the membrane that are then 'pinched off' as vesicles and incorporated into the membrane. Several forms; see pinocytosis, receptor-mediated endocytosis. Compare exocytosis.
The process by which large particles are brought into cells
Vesicular uptake of material from the extracellular space ( Ch. 6).
Uptake of extracellular materials by invagination of the plasma membrane to form a small membrane-bounded vesicle (endosome). Receptor-mediated endocvtosis involves the specific uptake of a receptor-bound ligand typically by invagination of clathrin-coated pits on the plasma membrane of animal cells..
Endocytosis is a process whereby cells absorb material (molecules such as proteins) from the outside by engulfing it with their cell membrane. It is used by all cells of the body because most substances important to them are polar and consist of big molecules, and thus cannot pass through the hydrophobic plasma membrane. The function of endocytosis is the opposite of exocytosis.
