Chapter 18 Heart Anatomy & physiology

Chapter 18 Heart Anatomy & physiology - 1.

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1. Which of the following is  not  a role of the pericardium? Your Answer: It facilitates heart contraction 2. The lining of the heart chambers is called the:  Your Answer: endocardium 3. The superior chambers of the heart are called the: Your Answer: atria.   4. Freshly oxygenated blood is delivered to the _____ and then it passes into the _______, to be pumped to the entire  body.  Your Answer: left atrium; left ventricle   5.
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Into which chamber of the heart do the pulmonary veins deliver blood? Your Answer: Right atrium   Correct Answer: Left atrium    6. Match the following: Option Your Answer: Correct Answer: 6.1 Right marginal artery     A. Supplies blood to the interventricular septum and anterior walls of both ventricles     D. Supplies blood to the right side of the myocardium     6.2 Posterior interventricular artery     B. Supplies blood to the left atrium and posterior walls of the left ventricle     C. Runs to the apex of the heart     6.3 Anterior interventricular artery    
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C. Runs to the apex of the heart     A. Supplies blood to the interventricular septum and anterior walls of both ventricles     6.4 Circumflex artery     D. Supplies blood to the right side of the myocardium     B. Supplies blood to the left atrium and posterior walls of the left ventricle       7. The most muscular chamber of the heart is the ________.  Your Answer: right ventricle   Correct Answer: left ventricle     8. Match the following: Option Your Answer: Correct Answer: 8.1
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Tricuspid valve     A. Valve between the left atrium and left ventricle     D. Valve between the right atrium and right ventricle     8.2 Mitral valve     B. Prevents backflow of blood into the right ventricle     A. Valve between the left atrium and left ventricle     8.3 Aortic semilunar valve     C. Gatekeeper to systemic circuit     C. Gatekeeper to systemic circuit     8.4 Pulmonary semilunar valve     D. Valve between the right atrium and right ventricle     B. Prevents backflow of blood into the right ventricle       9. Which of the following is a difference between cardiac muscle and skeletal muscle?  Your Answer: Unlike skeletal muscle, cardiac muscle is not striated.   Correct Answer: Unlike skeletal muscle cells, cardiac muscle cells can be autorhythmic. 
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  10. The role of the atrioventricular node (AV node) is to:  Your Answer: conduct impulses to the sinoatrial node (SA node).   Correct Answer: slow down impulses so that the atria can contract to fill the adjacent ventricles with blood.    11. Which is correctly paired?
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Chapter 18 Heart Anatomy & physiology - 1.

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