Definition that contains cell membrane
- transport an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes
- beta-adrenoceptor receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)
- transudation the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
- alpha-adrenoceptor receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)
- intracellular fluid liquid contained inside the cell membranes (usually containing dissolved solutes)
- semipermeable membrane a membrane (as a cell membrane) that allows some molecules to pass through but not others
- active transport transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy
- beta receptor receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat)
- exudation the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
- passive transport transport of a substance across a cell membrane by diffusion; expenditure of energy is not required