Chapter 20, Problem 8CRCAQ

Summary Introduction

To review:

1. The reason behind the abundance of varicose veins in the lower limbs of the human body.

2. The functional reason behind the less abundance of valves in the veins of the neck region.

Introduction:

The circulatory system is associated with the transportation of blood to the whole body. The long chain of blood vessels are present throughout the body in order to maintain the proper supply of the blood to different body parts. There are separate vessels for the transportation of oxygenated and deoxygenated blood.