Info

Artery

Vein

Arteries have lots of elastic fibers and smooth muscle, allowing them to withstand high pressures.

Artery

Arteries have lots of elastic fibers and smooth muscle, allowing them to withstand high pressures.

Valve Endothelium Basal lamina Elastic layer Smooth muscle

Elastic layer

Connective tissue

Vein

Because veins operate under low pressure, some veins have valves to prevent backflow of blood.

49.10 Anatomy of Blood Vessels The anatomical characteristics of blood vessels match their functions.

Connective tissue

Large artery

Small artery

Arterioles Venules

Capillaries

Vein

Large artery

Small artery

Arterioles Venules

Capillaries

Vein

y

.-Blood pressure (mm Hg)

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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