Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 13, Problem 22RA
Can a detective valve be detected by an ECG? Can a partially damaged AV node be detected by auscultation (listening) with a stethoscope? Explain.
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How can you detect an AV block on an ECG?
If damage to the AV node slowed down conduction through the heart, what would
be observed on an ECG?
an inverted T wave
a longer PR interval
a larger P wave
a wider QRS complex
a longer P wave
while a typical ECG tracing is shown, many things can alter and be perfectly normal for that individual. list some of the factors that change the standard tracing:.......?
Chapter 13 Solutions
Human Physiology
Ch. 13 - State the components of the circulatory system...Ch. 13 - Prob. 1bCPCh. 13 - Prob. 2CPCh. 13 - Prob. 3CPCh. 13 - Describe how the rate of erythropoiesis is...Ch. 13 - Prob. 5aCPCh. 13 - Prob. 5bCPCh. 13 - Using a flow diagram (arrows), describe the...Ch. 13 - Use a flow diagram to describe the systemic...Ch. 13 - List the AV valves and the valves of the pulmonary...
Ch. 13 - Discuss how defective valves affect blood flow...Ch. 13 - Prob. 7bCPCh. 13 - Prob. 8aCPCh. 13 - Prob. 8bCPCh. 13 - Draw a figure to illustrate the pressure...Ch. 13 - Prob. 10aCPCh. 13 - Using a line diagram, illustrate a myocardial...Ch. 13 - Draw an ECG and label the waves. Indicate the...Ch. 13 - Draw a figure that shows the relationship between...Ch. 13 - Prob. 11cCPCh. 13 - Prob. 12aCPCh. 13 - Prob. 12bCPCh. 13 - Explain the functions of capillaries and describe...Ch. 13 - Prob. 14CPCh. 13 - Prob. 15CPCh. 13 - Identify normal and pathological causes of...Ch. 13 - Prob. 16bCPCh. 13 - Prob. 17aCPCh. 13 - Explain how the lymphatic system and the...Ch. 13 - Prob. 18CPCh. 13 - Prob. 1RACh. 13 - All arteries in the body contain oxygen-rich blood...Ch. 13 - The "lub," or first heart sound, is produced by...Ch. 13 - The first heart sound is produced at
Ch. 13 - Changes in the cardiac rate primarily reflect...Ch. 13 - Prob. 6RACh. 13 - Prob. 7RACh. 13 - The cells that normally have the fastest rate of...Ch. 13 - Which of these statements is true? a. The heart...Ch. 13 - Prob. 10RACh. 13 - Prob. 11RACh. 13 - Prob. 12RACh. 13 - Prob. 13RACh. 13 - Prob. 14RACh. 13 - Prob. 15RACh. 13 - During the phase of isovolumetric relaxation of...Ch. 13 - Peristaltic waves of contraction move fluid within...Ch. 13 - Describe how the pacemaker cells produce a...Ch. 13 - What characteristic of the SA node distinguishes...Ch. 13 - Compare the duration of the heart's contraction...Ch. 13 - Step by step, describe the pressure changes that...Ch. 13 - Can a detective valve be detected by an ECG? Can a...Ch. 13 - Describe the causes of the P, QRS, and T waves of...Ch. 13 - The lungs are the only organs that receive the...Ch. 13 - Prob. 25RACh. 13 - Prob. 26RACh. 13 - Prob. 27RACh. 13 - Prob. 28RACh. 13 - Prob. 29RACh. 13 - Prob. 30RACh. 13 - Prob. 31RACh. 13 - Prob. 32RACh. 13 - Prob. 33RACh. 13 - Prob. 34RACh. 13 - Prob. 35RACh. 13 - Prob. 36RACh. 13 - Prob. 37RACh. 13 - Prob. 38RACh. 13 - Prob. 39RACh. 13 - Prob. 40RACh. 13 - Prob. 41RACh. 13 - Prob. 42RA
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- Based on the cases mentioned below, what pattern can be observed on an ECG? - Administration of alpha-2 agonists, hypercalcemia, cardiac glycoside toxicity, Lyme disease, endocarditis, traumatic myocarditis, cardiomyopathies, endocardiosis or myocardial fibrosis a-1st degree AV block b-AV block 2nd degree Mobitz type 1 c-AV block 2nd degree Mobitz type 2 d-3rd degree AV blockarrow_forwardWhich of the following is most likely to be present on the resting EKG recording of a patient with AV node damage?A) An R-R interval of 0.52 seconds at rest.B) A P-R interval of 0.28 seconds at rest.C)An inverted T waveD) Normal sinus rhythmarrow_forwardA cardiologist observed an enlarged QR wave in the ECG of a patient. What does it indicate?arrow_forward
- A patient’s ECG tracing shows a consistent pattern of two P waves followed by a normal QRS complex and T wave. What is the cause of this abnormal wave pattern?arrow_forwardIn an EKG reading: | the P wave corresponds to the AV node firing. the QRS complex corresponds to a time when ventricular pressure is greater than atrial pressure. When in sympathetic mode, the AV Bundle will be receiving impulses at a faster rate then when in parasympathetic mode. | The T wave represents the time when the SA node first fires. The P-R interval represents the delay that occurs when the AV Bundle transmits signals to the Purkinje fibers.arrow_forwardIrregularities of heart valves and septal defects are more easily detected by auscultation than by electrocardiography. Why?arrow_forward
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