Class Notes (1,100,000)
US (480,000)
KSU (2,000)
BSCI (90)
Lecture 28

BSCI 10001 Lecture Notes - Lecture 28: Extracellular Fluid, Passive Transport, Fluid Compartments

Biological Sciences
Course Code
BSCI 10001
Adam Arthur Leff

This preview shows half of the first page. to view the full 3 pages of the document.
Cells and Tissues
Cellular Physiology: Membrane Transport
Membrane Transport movement of substance into and out of the cell
Transport is by two basic methods
Passive transport
No energy is required
Active transport
The cell must provide metabolic energy
Solutions and Transport
Solution homogeneous mixture of two or more components
Solvent dissolving medium
Solutes components in smaller quantities within a solution
Intracellular fluid nucleoplasm and cytosol
Interstitial fluid fluid on the exterior of the cell
Selective Permeability
The plasma membrane allows some materials to pass while excluding others
This permeability includes movement into and out of the cell
Passive Transport Processes
Particles tend to distribute themselves evenly within a solution
Movement is
from high
to low
or down a
Passive Transport Processes
Types of diffusion
Simple diffusion
Unassisted process
Solutes are lipid-soluble materials or small enough to pass through
membrane pores
Passive Transport Processes
Types of diffusion
Osmosis simple diffusion of water
Highly polar water easily crosses the plasma membrane
Facilitated diffusion
Substances require a protein carrier for passive transport
Diffusion through the Plasma Membrane
Passive Transport Processes
You're Reading a Preview

Unlock to view full version