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  3. Unit 4: fluids and transport
  4. The cardiovascular system: blood
  5. Introduction

Introduction

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Blood vessels

This photo shows a forearm with the veins bulging.
While most blood vessels are located deep from the surface and are not visible, the superficial veins of the upper limb provide an indication of the extent, prominence, and importance of these structures to the body. (credit: Colin Davis)

Chapter objectives

After studying this chapter, you will be able to:

  • Compare and contrast the anatomical structure of arteries, arterioles, capillaries, venules, and veins
  • Accurately describe the forces that account for capillary exchange
  • List the major factors affecting blood flow, blood pressure, and resistance
  • Describe how blood flow, blood pressure, and resistance interrelate
  • Discuss how the neural and endocrine mechanisms maintain homeostasis within the blood vessels
  • Describe the interaction of the cardiovascular system with other body systems
  • Label the major blood vessels of the pulmonary and systemic circulations
  • Identify and describe the hepatic portal system
  • Describe the development of blood vessels and fetal circulation
  • Compare fetal circulation to that of an individual after birth

In this chapter, you will learn about the vascular part of the cardiovascular system, that is, the vessels that transport blood throughout the body and provide the physical site where gases, nutrients, and other substances are exchanged with body cells. When vessel functioning is reduced, blood-borne substances do not circulate effectively throughout the body. As a result, tissue injury occurs, metabolism is impaired, and the functions of every bodily system are threatened.

Questions & Answers

if three forces F1.f2 .f3 act at a point on a Cartesian plane in the daigram .....so if the question says write down the x and y components ..... I really don't understand
Syamthanda Reply
hey , can you please explain oxidation reaction & redox ?
Boitumelo Reply
hey , can you please explain oxidation reaction and redox ?
Boitumelo
for grade 12 or grade 11?
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the value of V1 and V2
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advantages of electrons in a circuit
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we're do you find electromagnetism past papers
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it is the force or component of the force that the surface exert on an object incontact with it and which acts perpendicular to the surface
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Anna Reply
how to calculate coefficient of static friction
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how to calculate static friction
Lisa
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How to calculate force
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a structure of a thermocouple used to measure inner temperature
Anna Reply
a fixed gas of a mass is held at standard pressure temperature of 15 degrees Celsius .Calculate the temperature of the gas in Celsius if the pressure is changed to 2×10 to the power 4
Amahle Reply
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Raymond Reply
what is acceleration
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a rate of change in velocity of an object whith respect to time
Khuthadzo
how can we find the moment of torque of a circular object
Kidist
Acceleration is a rate of change in velocity.
Justice
t =r×f
Khuthadzo
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hi
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use fnet method. how many obects are being calculated ?
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Lungile Reply
you use Fnet equals ma , newtoms second law formula
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Source:  OpenStax, Anatomy & Physiology. OpenStax CNX. Feb 04, 2016 Download for free at http://legacy.cnx.org/content/col11496/1.8
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