Chapter 19 The Circulatory System: Heart

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Chapter 19  The Circulatory System: Heart

 

 

Complete chapter Questions And Answers
 

Sample Questions

 

 

True / False Questions

1. The pulmonary circuit is supplied by both the right and the left sides of the heart.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: K08.01 Identify the major blood vessels entering and leaving the heart and classify them as either an artery or a vein and as containing either oxygen- rich or oxygen-poor blood. HAPS Topic: Module K08 Blood flow through the heart. Learning Outcome: 19.01a Define and distinguish between the pulmonary circuit and systemic circuit. Section: 19.01 Topic: Pulmonary blood circulation

2. The systemic circuit contains oxygen-rich blood only.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: K08.01 Identify the major blood vessels entering and leaving the heart and classify them as either an artery or a vein and as containing either oxygen- rich or oxygen-poor blood. HAPS Topic: Module K08 Blood flow through the heart. Learning Outcome: 19.01a Define and distinguish between the pulmonary circuit and systemic circuit. Section: 19.01 Topic: Systemic blood circulation

3.

The fibrous skeleton of the heart serves as electrical insulation between the atria and the ventricles.

TRUE

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: K06.02 On the external heart identify the location of the four chambers as well as the coronary sulcus, anterior interventricular sulcus and posterior interventricular sulcus. HAPS Objective: K09.01a List the parts of the conduction system of the heart and explain how the system functions. HAPS Topic: Module K06 Gross and microscopic anatomy of the heart. HAPS Topic: Module K09 Conduction system of the heart and the electrocardiogram. Learning Outcome: 19.02a Describe the three layers of the heart wall. Section: 19.02 Topic: Gross anatomy of the heart

Blood in the heart chambers provides most of the myocardium’s oxygen and nutrient needs.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: K06.08 Identify the right and left coronary arteries and their branches, the cardiac veins, and the coronary sinus. HAPS Topic: Module K06 Gross and microscopic anatomy of the heart. Learning Outcome: 19.02f Describe the arteries that nourish the myocardium and the veins that drain it.

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Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.

4.

5.

Section: 19.02 Topic: Gross anatomy of the heart

Desmosomes form channels that allow each cardiomyocyte to electrically stimulate its neighbors.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: K06.06 Identify myocardium and describe its histological structure, including the significance of intercalated discs. HAPS Topic: Module K06 Gross and microscopic anatomy of the heart. Learning Outcome: 19.03b Explain the nature and functional significance of the intercellular junctions between cardiac muscle cells. Section: 19.03 Topic: Physiology of cardiac muscle contraction and the electrocardiogram

Parasympathetic stimulation reduces heart rate.

TRUE

6.

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: K07.05 Compare and contrast the role of nerves in the depolarization of cardiac pacemaker cells, ventricular contractile cells, and skeletal muscle cells. HAPS Topic: Module K07 Physiology of cardiac muscle contraction. Learning Outcome: 19.03d Describe the nerve supply to the heart and explain its role. Section: 19.03 Topic: Physiology of cardiac muscle contraction and the electrocardiogram Topic: Regulation of cardiac output, stroke volume, and heart rate

7. The cardiac plexus and cardiac nerves dominate the innervation of the heart and contains both parasympathetic and sympathetic fibers.

TRUE

Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: K07.05 Compare and contrast the role of nerves in the depolarization of cardiac pacemaker cells, ventricular contractile cells, and skeletal muscle cells. HAPS Topic: Module K07 Physiology of cardiac muscle contraction. Learning Outcome: 19.03d Describe the nerve supply to the heart and explain its role. Section: 19.03 Topic: Physiology of cardiac muscle contraction and the electrocardiogram Topic: Regulation of cardiac output, stroke volume, and heart rate

8.

Cardiac muscle can only use glucose as a source of organic fuel.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Topic: Module K07 Physiology of cardiac muscle contraction. Learning Outcome: 19.03a Describe the unique structural and metabolic characteristics of cardiac muscle. Section: 19.03 Topic: Physiology of cardiac muscle contraction and the electrocardiogram

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Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.

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