Chapter 21 Anatomy of the Cardiovascular System

TRUE/F ALSE

1. The internal layer of the tissue in the heart is the epicardium.

ANS: F DIF: Memorization TOP: Wall of the Heart

REF: Page 635

2. The heart of the developing human embryo begins to beat regularly early in the fourth week after fertilization.

ANS: T DIF: Memorization REF: Page 630 TOP: Anatomy of the Cardiovascular System Introduction

3. A major function of the pericardial sac is protection against friction.

ANS: T DIF: Memorization TOP: Coverings of the Heart

4. The mitral valve has three flaps.

ANS: F DIF: Memorization TOP: Valves of the Heart

5. The tunica media is also called the tunica adventitia. ANS: F DIF: Memorization

TOP: Outer Layer
6. Anastomoses are important for providing collateral circulation.

REF: Page 634

REF: Page 638

REF: Page 646

ANS: T DIF: Memorization
REF: Page 640|Page 641 TOP: Blood Supply of Heart Tissue

7. The value of an anastomosis is that it allows blood to bypass a blood vessel obstruction.

ANS: T DIF: Memorization REF: Page 641 TOP: Blood Supply of Heart Tissue

8. Arteries always carry blood away from the heart.

Mosby items and derived items © 2013, 2010, 2007, 2003 by Mosby, Inc., an affiliate of Elsevier Inc.

Test Bank 21-2

ANS: T DIF: Memorization REF: Page 642 TOP: Types of Blood Vessels