HUMAN ANATOMY PACKAGE
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ISBN: 9780135976777
Author: Martini
Publisher: PEARSON
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Question
Chapter 21, Problem 3RC
Summary Introduction
Introduction:
The network of heart nerves that helps in efficient functioning of heart is called as innervations of heart. The sympathetic nerves and parasympathetic nerves innervates heart. These nerves affect heart rate, contraction forces, and cardiac output.
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Chapter 21 Solutions
HUMAN ANATOMY PACKAGE
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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- Why is your heart rate high after running a short distance, but not as elevated after running a much longer distance? How do you explain this?arrow_forwardWhy do both ventricles have to have the same volume?arrow_forwardif the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to superior?arrow_forward
- Which nerves of the body carry ANS fibers that innervate the SA and AV nodes of the heart? Which of the nerves you listed carry sympathetic fibers and which carry parasympathetic fibers? What is the effect of increased sympathetic impulses on heart rate? What about increased parasympathetic impulses?arrow_forwardA man was rushed to the ER when he complained of a constant pain down his left shoulder. The attending doctor said that he might be having a heart attack. How do you think the doctor reached this conclusion?arrow_forwardWhich region of the heart is innervated by the sympathetic division but not by the parasympathetic division?arrow_forward
- In response to a severe hemorrhage, blood pressure lowers, the heart rate increases dramatically, and the stroke volume lowers. If low blood pressure activates a reflex that increases sympathetic stimulation of the heart, why is the stroke volume low?arrow_forwardOf the choices, what does the axillary nerve do?arrow_forwardA patient is taking a drug that blocks beta-adrenergic receptors. What changes in cardiac function will the drug cause?arrow_forward
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