Chapter 6: Cardiovascular System

Keywords

Please familiarize yourself with these keywords before you start reading the chapter:

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Capillaries
Smallest vascular channel that facilitates interchange of nutrients/waste between blood and organ.
Elastic artery
A large vessel that handles high pressure, high volume blood flow exiting the ventricles.
Endocardium
The inner most lining of the heart and is the cardiac equivalent of the tunica intima.
Endothelial cells:
A highly specialized cell type that covers the luminal surface of a vascular structure.
Epicardium
Outside surface of the heart comprised of connective tissue and mesothelium.
Lymphatics
Vascular structures responsible for draining interstitial fluidĀ  and returning it back to the cardiovascular system.
Myocardium
Portion of the heart comprised of cardiac muscle.
Pericardium
Sac-like structure that encloses the heart.
Purkinje fibers
Modified cardiomyocytes responsible for propagating electrical signals through the myocardium ensuring coordinated contraction.
Tunica adventitia
The outermost layer of the vessel wall composed primarily of connective tissue, smaller blood vessels and nerves.
Tunica media
The middle portion of the vessel wall composed of smooth muscle.
Veins
Thinner walled vascular structures responsible for carrying deoxygenated blood back to the heart in most cases.

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Keywords by Ryan Jennings and Christopher Premanandan is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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