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3.1 Anatomy of the Cardiovascular System: Arteries and Veins

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3.1 Anatomy of the Cardiovascular System: Arteries and Veins

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Questions and Answers

What is the primary function of the tunica media in blood vessels?

To facilitate blood flow

To produce endothelium

To provide a barrier against external damage

To determine the diameter of the vessel (correct)

Which of the following is a characteristic of arteries?

Higher pressure (correct)

Valves to prevent backflow

Thinner muscle layers

Less elastic membranes

What is the function of the valves in veins?

To prevent backflow (correct)

To produce elastic fibers

To facilitate blood flow

To regulate blood pressure

What is the outermost layer of a blood vessel?

Tunica externa Signup and view all the answers

What is the function of the internal elastic membrane in arteries?

To maintain the shape of the artery Signup and view all the answers

What is the composition of the tunica intima?

Single layer of endothelium (simple squamous) Signup and view all the answers

Study Notes

Blood Vessel Layers

The three layers of blood vessels are: Tunica Externa, Tunica Media, and Tunica Intima/Interna
Tunica Externa is composed of connective tissue and an external elastic membrane
Tunica Media is composed of smooth muscle and determines the diameter of the vessel
Tunica Intima/Interna is a single layer of endothelium (simple squamous)

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Description

Study the basic anatomy of blood vessels, including the layers of arteries and veins, for Exam 3.1 and Picture Exam 2 in Anatomy & Physiology II (BIOL2220).