Anatomy and Physiology: An Integrative Approach with Connect Access Card
3rd Edition
ISBN: 9781260254440
Author: Michael McKinley, Valerie O'Loughlin, Theresa Bidle
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 19.7, Problem 29WDL
What three electrical events occur at the sarcolemma of cardiac muscle cells? Explain each event.
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Chapter 19 Solutions
Anatomy and Physiology: An Integrative Approach with Connect Access Card
Ch. 19.1 - Prob. 1LOCh. 19.1 - WHAT DID YOU LEARN?
1 Define perfusion. Why would...Ch. 19.1 - Prob. 2LOCh. 19.1 - LEARNING OBJECTIVE
3. Describe the general...Ch. 19.1 - WHAT DO YOU THINK?
1 What vessels attached to the...Ch. 19.1 - Prob. 2WDLCh. 19.1 - Prob. 3WDLCh. 19.1 - Prob. 4WDLCh. 19.1 - Prob. 5WDLCh. 19.1 - Prob. 4LO
Ch. 19.1 - What path does blood follow through the heart?...Ch. 19.1 - Which of the great vessels is both an artery and...Ch. 19.2 - LEARNING OBJECTIVE
5. Describe the location and...Ch. 19.2 - Prob. 8WDLCh. 19.2 - Prob. 9WDLCh. 19.2 - Prob. 6LOCh. 19.2 - Prob. 7LOCh. 19.2 - Describe the three layers that cover the heart....Ch. 19.3 - LEARNING OBJECTIVE
8. Compare the superficial...Ch. 19.3 - Prob. 11WDLCh. 19.3 - Prob. 12WDLCh. 19.3 - Prob. 13WDLCh. 19.3 - Prob. 9LOCh. 19.3 - What are the layers of the heart (in order) that a...Ch. 19.3 - Prob. 10LOCh. 19.3 - What is the structure that separates the two...Ch. 19.3 - Prob. 16WDLCh. 19.3 - Prob. 11LOCh. 19.3 - What are the functions of the tendinous cords and...Ch. 19.3 - Prob. 12LOCh. 19.3 - Which function of the fibrous skeleton allows the...Ch. 19.3 - Prob. 13LOCh. 19.3 - Prob. 14LOCh. 19.3 - Prob. 15LOCh. 19.3 - Which features of cardiac muscle support aerobic...Ch. 19.4 - Prob. 16LOCh. 19.4 - Prob. 17LOCh. 19.4 - Prob. 18LOCh. 19.4 - Prob. 2WDTCh. 19.4 - What areas of the heart are deprived of blood when...Ch. 19.4 - Prob. 19LOCh. 19.4 - Prob. 21WDLCh. 19.5 - Prob. 20LOCh. 19.5 - Prob. 22WDLCh. 19.5 - Prob. 21LOCh. 19.5 - Which autonomic division is associated with the...Ch. 19.6 - LEARNING OBJECTIVE
22. Describe a nodal cell at...Ch. 19.6 - Prob. 24WDLCh. 19.6 - Prob. 23LOCh. 19.6 - Prob. 24LOCh. 19.6 - Prob. 3WDTCh. 19.6 - What is autorhythmicity? Describe how nodal cells...Ch. 19.6 - Prob. 25LOCh. 19.6 - What is the path of an action potential through...Ch. 19.6 - What anatomic features slow the conduction rate of...Ch. 19.7 - Prob. 26LOCh. 19.7 - In which direction does Ca2+ move in response to...Ch. 19.7 - Prob. 27LOCh. 19.7 - Prob. 28LOCh. 19.7 - Prob. 4WDTCh. 19.7 - What three electrical events occur at the...Ch. 19.7 - Prob. 29LOCh. 19.7 - Prob. 30LOCh. 19.7 - What is the significance of the extended...Ch. 19.7 - Prob. 31LOCh. 19.7 - What events in the heart are indicated by each of...Ch. 19.8 - Prob. 32LOCh. 19.8 - Prob. 33LOCh. 19.8 - Pressure changes that occur during the cardiac...Ch. 19.8 - Prob. 34LOCh. 19.8 - Prob. 35LOCh. 19.8 - What is occurring during ventricular ejection?Ch. 19.8 - Prob. 34WDLCh. 19.8 - Define end-diastolic volume, end-systolic volume,...Ch. 19.9 - Prob. 36LOCh. 19.9 - Prob. 37LOCh. 19.9 - What are the two factors that determine cardiac...Ch. 19.9 - What is the cardiac output at rest and during...Ch. 19.9 - Prob. 38LOCh. 19.9 - Prob. 39LOCh. 19.9 - Prob. 38WDLCh. 19.9 - Describe the atrial reflex, which involves...Ch. 19.9 - Prob. 40LOCh. 19.9 - Prob. 41LOCh. 19.9 - Prob. 40WDLCh. 19.9 - Prob. 42LOCh. 19.9 - Prob. 41WDLCh. 19.10 - Prob. 43LOCh. 19.10 - Prob. 44LOCh. 19.10 - Prob. 42WDLCh. 19 - Which of the following is the correct circulatory...Ch. 19 - The pericardial cavity is located between the a....Ch. 19 - How is blood prevented from backflowing from the...Ch. 19 - ____ 4. Venous blood draining from the heart wall...Ch. 19 - _____ 5. Calcium channels in the nodal cells...Ch. 19 - ____6. Action potentials are spread rapidly...Ch. 19 - Why is it necessary to stimulate papillary muscles...Ch. 19 - ____ 8. Preload is a measure of a. stretch of...Ch. 19 - ____ 9. All of the following occur when the...Ch. 19 - ____10. What occurs during the atrial reflex? a....Ch. 19 - Prob. 11DYBCh. 19 - Compare the structure, location, and function of...Ch. 19 - Prob. 13DYBCh. 19 - Explain why the walls of the atria are thinner...Ch. 19 - Describe the structure and function of...Ch. 19 - Explain the general location and function of...Ch. 19 - Describe the functional differences in the effects...Ch. 19 - Prob. 18DYBCh. 19 - List the five events of the cardiac cycle, and...Ch. 19 - Define cardiac output, and explain how it is...Ch. 19 - A young man was doing some vigorous exercise when...Ch. 19 - A young man was doing some vigorous exercise when...Ch. 19 - Prob. 3CALCh. 19 - Prob. 4CALCh. 19 - During surgery, the right vagus nerve was...Ch. 19 - Prob. 1CSLCh. 19 - Prob. 2CSLCh. 19 - Your grandfather was told that his SA node...
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- Why is the plateau phase so critical to cardiac musclefunction?arrow_forwardWhat is the significance of the extended refractory period in cardiac muscle?arrow_forwardWhat are the major factors that determine the contraction of skeletal muscle? What is the role of Calcium. Identify the similarities and differences comparing skeletal muscle contraction and relaxation to cardiac muscle.arrow_forward
- Briefly describe the events of excitation-contraction coupling in cardiac muscle cells.arrow_forwardCan cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not? (highlight the main concepts)arrow_forwardUnlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why is this necessary?arrow_forward
- Explain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal muscle.arrow_forwardWhy is Excitation Contraction Coupling important?arrow_forwardA significant structural feature in the microscopic studyof cardiac muscle cells is the presence of gap junctionsbetween neighboring cells. Why are these junctions soimportant?arrow_forward
- What are the basic structural features of cardiac muscle cells?arrow_forwardCan cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not? (highlight the main answer)arrow_forwardIn cardiac muscle, which ion serves both to depolarize the cells and as the essential link to myocyte contraction (the troponin/tropomyosin part)? a-Na+ b-Ca+ c-Ca2+ d-Cl-arrow_forward
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