Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 17.5, Problem 10CYU
Cardiac muscle cannot go into tetany. Why?
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Chapter 17 Solutions
Anatomy & Physiology (6th Edition)
Ch. 17.1 - The heart is in the mediastinum. Just what is the...Ch. 17.1 - From inside to outside, list the layers of the...Ch. 17.1 - What is the purpose of the serous fluid inside the...Ch. 17.2 - What is the function of the papillary muscles and...Ch. 17.2 - Prob. 5CYUCh. 17.3 - Which side of the heart acts as the pulmonary...Ch. 17.3 - Which of the following statements are true? (a)...Ch. 17.3 - Prob. 8CYUCh. 17.4 - For each of the following, state whether it...Ch. 17.5 - Cardiac muscle cannot go into tetany. Why?
Ch. 17.5 - Which part of the intrinsic conduction system...Ch. 17.5 - Describe the electrical event in the heart that...Ch. 17.5 - MAKING connections Below are drawings of three...Ch. 17.6 - The second heart sound is associated with the...Ch. 17.6 - If the mitral valve were insufficient, would you...Ch. 17.6 - During the cardiac cycle, there are two periods...Ch. 17.7 - Prob. 17CYUCh. 17.7 - What problem of cardiac output might ensue if the...Ch. 17 - When the semilunar valves are open, which of the...Ch. 17 - The portion of the intrinsic conduction system...Ch. 17 - An ECG provides information about (a) cardiac...Ch. 17 - The sequence of contraction of the heart chambers...Ch. 17 - The fact that the left ventricular wall is thicker...Ch. 17 - Prob. 6MCCh. 17 - In the heart, which of the following apply? (1)...Ch. 17 - The activity of the heart depends on intrinsic...Ch. 17 - Freshly oxygenated blood is first received by the...Ch. 17 - Describe the location and position of the heart in...Ch. 17 - Describe the pericardium and distinguish between...Ch. 17 - Trace one drop of blood from the time it enters...Ch. 17 - (a) Describe how heart contraction and relaxation...Ch. 17 - The refractory period of cardiac muscle is much...Ch. 17 - (a) Name the elements of the intrinsic conduction...Ch. 17 - Draw a normal ECG pattern. Label and explain the...Ch. 17 - Define cardiac cycle, and follow the events of one...Ch. 17 - What is cardiac output, and how is it calculated?Ch. 17 - Discuss how the Frank-Starling law of the heart...Ch. 17 - Prob. 1CCSCh. 17 - Prob. 2CCSCh. 17 - Prob. 3CCSCh. 17 - Prob. 4CCSCh. 17 - Prob. 5CCSCh. 17 - Prob. 6CCS
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- Can cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not? (highlight the main concepts)arrow_forwardPerfusion Mrs Gloria reports that she is having increasing difficulty because she experiences severe pain in her calf muscles after walking for more than a city block. The pain subsides if she rests for a few minutes, but returns with activity. Her feet are cool and pale; pedal and posterior tibial pulses are not palpable, and femoral pulses are difficult to palpate. She lives in a downtown apartment and uses public transportation to travel across town to visit her husband’s grave weekly. What are the circulatory causes of her leg pain? Which risk factors would you expect to find in her history to support this conclusion? The doctor suggests that Mrs Gloria cease her visits to the cemetery since she has to walk a long way there to reach the grave site. Would you agree with this plan? Why or why not? What considerations or viewpoints influence your choice? Mrs Gloria says that she wears support stockings because her friend told her they help the circulation in her legs. How would you…arrow_forwardCardiac muscles differ from skeletal muscles in that they.arrow_forward
- Explain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal muscle.arrow_forwardWhich of the following characteristics is NOT a property of cardiac muscles? Group of answer choices involuntary control intercalated disks multinucleated striatedarrow_forwardExplain why cardiac muscle cannot undergo tetanic contractions?arrow_forward
- Draw a labeled cardiac muscle action potential.arrow_forwardQuestion. Angus is an 18-year-old young adult, who Is riding his skateboard in a city park. He is not wearing protective gear, including a helmet. When a friend distracts his attention, he runs head-on into a planter and is thrown over the planter b0x onto the concrete, landing on his left side. He immediately experiences pain in his left side, left wrist, and abdomen. His left wrist is angulated and obviously broken. A head-to-toe assessment demonstrates small, superficial scrapes on the patient's forehead and left cheek. His facial structures appear to be intact. Neurologically, he is normal, with a Glasgow Coma Scale (GCS) score of 14. He has no complaints of shortness of breath, and his chest wall shows no obvious external injury. An x ray of his left wrist shows a comminuted fracture of his left radius and ulna. Angus is taken to the operating room for orthopaedic repair of his left wrist. After surgery, he is admitted to the orthopaedic floor with orders for pain medication as…arrow_forwardExplain how the skeletal muscle pump might play a role in this patient’s signs and symptoms. can you please cite it?arrow_forward
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