transport
[trans´port] 1. movement of materials in biologic systems, particularly across the
cell membrane into and out of cells or across epithelial layers.
2. in the
nursing interventions classification, a
nursing intervention defined as moving a patient from one location to another.
oxygen transport the carrying of oxygen through the bloodstream bound to hemoglobin (see
oxyhemoglobin).
passive transport the movement of materials, usually across
cell membranes, by processes not requiring expenditure of metabolic energy. See also
active transport.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
fa·cil·i·tat·ed trans·port
the protein-mediated transport of a compound across a biomembrane that is not ion-driven; a saturable transport system.
Farlex Partner Medical Dictionary © Farlex 2012
passive transport
n. The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
pas·sive trans·port
(pas'iv trans'pōrt) The movement of particles or ions across a semipermeable membrane without the expenditure of energy. It is directly influenced by chemical or electrical gradients: the difference in the number of particles on either side of the membrane (chemical) or a difference in charged particles or ions (electrical).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
passive transport
The movement of dissolved material through a biological membrane in the direction of fluid flow and without the expenditure of energy. Compare ACTIVE TRANSPORT.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
passive transport
see DIFFUSION.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
pas·sive trans·port
(pas'iv trans'pōrt) The movement of particles or ions across a semipermeable membrane without the expenditure of energy.
Medical Dictionary for the Dental Professions © Farlex 2012