Chapter 42, Problem 42.1CR

How does the flow of a fluid in a closed circulatory system differ from the movement of molecules between cells and their environment with regard to distance traveled, direction traveled, and driving force?

Summary Introduction

To determine: The differences between the flows of fluid in closed circulatory system from the movement of molecules between cells and their environment with regard to distance traveled, direction traveled, and driving force.

Introduction: A circulatory system has three basic components including a circulatory fluid, a set of interconnecting vessels, and a muscular pumping system called as the heart. By transporting circulatory fluid (usually blood) throughout the body, the circulatory system links the aqueous environment of the body cells to the organs involved in gaseous exchange, nutrient absorption, and disposal of wastes.

Explanation of Solution

The differences between the flows of fluid in closed circulatory system from the movement of molecules between cells and their environment with regard to distance traveled, direction traveled, and driving force are given as follows:

Characteristics	Flow of fluid in closed circulatory system	The movement of molecules between cells and their environment
Distance traveled	Millimeters to meters	Less or equal to 1 millimeter
Direction traveled	Single direction	Random direction
Driving force	ATP-driven muscular pump	Diffusion