Chapter 30, Problem 8WIO

Summary Introduction

To determine:

How do the rest of the body’s cells receive these resources and dispose of wastes as endothelial cell lining the heart and blood vessels are the only cells to receive nutrients and ${\text{O}}_{\text{2}}$ directly from blood.

Concept introduction:

Endothelial cells are present inside blood vessels. It helps in the maintenance of permeability of vessel wall and also regulates blood flow. It is also found on the inner wall of the heart chamber and lymphatic vessels. It carries excessive plasma around the body.