Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 6RC
Define a pacemaker cell, and list the group of cells that normally serve as the heart's pacemaker, as well as those other cells that have the potential to serve as a pacemaker.
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Chapter 21 Solutions
Human Anatomy (9th Edition)
Ch. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 2RFTCh. 21 - Prob. 3RFTCh. 21 - Prob. 4RFTCh. 21 - Prob. 5RFTCh. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 7RFTCh. 21 - Prob. 8RFTCh. 21 - Prob. 9RFTCh. 21 - Match each numbered item with the most closely...
Ch. 21 - The potential space between the parietal and...Ch. 21 - Prob. 12RFTCh. 21 - Which of the following is not true of intercalated...Ch. 21 - Prob. 14RFTCh. 21 - The pacemaker cells of the heart are located in...Ch. 21 - Prob. 16RFTCh. 21 - Prob. 1RCCh. 21 - If the papillary muscles fail to contract, (a)...Ch. 21 - Prob. 3RCCh. 21 - Prob. 4RCCh. 21 - Prob. 5RCCh. 21 - Define a pacemaker cell, and list the group of...Ch. 21 - Prob. 7RCCh. 21 - Prob. 8RCCh. 21 - Why are nodal cells unique? What is their...Ch. 21 - Prob. 10RCCh. 21 - Prob. 1CTCh. 21 - 2. Lee is brought to the emergency room suffering...Ch. 21 - Prob. 3CT
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- Describe the mechanical events of the cardiac cycle. (use terms like atrial systole, atrial diastole, ventricular diastole, ventricular systole, isovolumic ventricular contraction, isovolumic ventricular relaxation, ventricular ejection, period of rapid filling)arrow_forwardDescribe why a doctor would give a patient that is diagnosed with acute myocardial infarction the treatment of tissue plasminogen activator(tPA)? What will it do?arrow_forwardWhat is the mechanism behind the action potentials in the pacemaker cells?arrow_forward
- Describe the pathway of electrical conduction of the heart, starting with the SA node. How does damage to the AV node affect this conduction pathway and the ECG?arrow_forwardPacemaker in heart is?arrow_forwardDraw a block schematic of the heart showing the four main chambers and explain how oxygenated and de-oxygenated blood flows to the lungs and arteries. You should include a labelled diagram of a typical electrocardiogram (ECG) and indicate how the primary features of the ECG relate to the state of the heart as it varies over the cycle.arrow_forward
- An individual presents with cardiac tamponade. Their heart would be the most efficient in pumping out blood during which of the following?arrow_forwardList three ways in which clotting is limited.arrow_forwarda)How is one-way flow through the heart achieved and What are the stages of the cardiac cycle and the changes in pressure that occur in thechambers?b)Define how cardiac output is calculated, and what it can tell you about heart function. c. What factors influence cardiac output to maintain adequate perfusion?arrow_forward
- Describe the spread of the action potential through the heart’s conduction system.arrow_forwardIn 500 to 750 words, identify and describe the structure and function of the heart, how the cardiac cycle works, and what is cardiac output.arrow_forwardUsing LEADER LINES or ARROWS, precisely label 15 relevant events of the cardiac cycle on the graph, including: the 5 major phases 2 heart sounds where valves open and close (4 of these) where major pressure changes occur (4-5 of these)arrow_forward
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