Chapter 3, Problem 4IACT

a.

Summary Introduction

To describe: Whether diffusion, osmosis or filtration is utilized in the situation in which the injection of a drug that is hypertonic to the tissue stimulates pain.

Introduction: The cell membrane is thin, elastic, flexible covering that holds the cellular contents. It is also called plasma membrane, which is the actively functioning part of the living system. It regulates the movement of substance in and out of the cell. The transport of substance across the membrane is important for the proper functioning of the system.

b.

Summary Introduction

To describe: Whether diffusion, osmosis or filtration is utilized in the situation where the urea concentration in the dialysing fluid of an artificial kidney is decreased.