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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Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why is this necessary?
Can cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not?
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Can cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not?
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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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- Cardiac muscle is described as being under involuntary control. Why is it that some individuals can seemingly “control” theirheart rate through meditation?arrow_forwardExplain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal muscle.arrow_forwardHello, good day. I have a problem answering this question, and I need your help. Hoping for a response, and thank you so much. Instruction: The answer must be in a minimum of 2 paragraphs, and each paragraph must have a minimum of 4 sentences. Question: Is cardiac muscle voluntary or involuntary?arrow_forward
- Question. 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_forwardDraw a labeled cardiac muscle action potential.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
- A 30yrs old man sustain a fructure of his leg 2 month ago. The leg has been encased in a cast, plaster of Paris PoP and he just had the cast removed. He is amazed at the degree to which the muscle in his leg have shrunk. What are physiological and patholocal changes that took place to this man.arrow_forwardSkeletal muscle fibers regularly divide by mitosis. True Falsearrow_forwardMultiple Choice.arrow_forward
- At the gym Sean gets on a stair-climbing machine and climbs as fast as he can for fifteen minutes. At the end of that time he is breathing hard and his quadriceps and other leg muscles are aching. What is the physiological explanation for these Symptoms?arrow_forwardAny abnormal condition of skeletal muscles is known as _______________________.arrow_forward_____Myocardial muscles are located in the walls of internal organs such as the digestive tract, blood vessels, and ducts leading from glands.arrow_forward
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