Principles of Anatomy and Physiology
16th Edition
ISBN: 9781119662792
Author: Tortora, Gerard J., DERRICKSON, Bryan H.
Publisher: WILEY
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Chapter 20, Problem 2CTQ
Unathletic Sylvia resolves to begin an exercise program. She tells you that she wants to make her heart "beat as fast as it can" during exercise. Explain why that may not be a good idea.
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Chapter 20 Solutions
Principles of Anatomy and Physiology
Ch. 20 - l. Define each of the following external features...Ch. 20 - 2. Describe the structure of the pericardium and...Ch. 20 - 3. What are the characteristic internal features...Ch. 20 - Prob. 4CPCh. 20 - 5. What is the relationship between wall thickness...Ch. 20 - Prob. 6CPCh. 20 - What causes the heart valves to open and to close?...Ch. 20 - In correct sequence, which heart chambers, heart...Ch. 20 - Prob. 9CPCh. 20 - Prob. 10CP
Ch. 20 - 11. In what ways are autorhythmic fibers similar...Ch. 20 - What happens during each of the three phases of an...Ch. 20 - 13. In what ways are ECGs helpful in diagnosing...Ch. 20 - How does each ECG wave, interval, and segment...Ch. 20 - 15. Why must left ventricular pressure be greater...Ch. 20 - Prob. 16CPCh. 20 - During which two periods of the cardiac cycle do...Ch. 20 - Prob. 18CPCh. 20 - Prob. 19CPCh. 20 - Prob. 20CPCh. 20 - Prob. 21CPCh. 20 - Define cardiac reserve. How does it change with...Ch. 20 - Prob. 23CPCh. 20 - 24. What are some of the cardiovascular benefits...Ch. 20 - Prob. 25CPCh. 20 - Prob. 26CPCh. 20 - Why is the cardiovascular system one of the first...Ch. 20 - From which tissue does the heart develop?Ch. 20 - Gerald recently visited the dentist. During the...Ch. 20 - 2. Unathletic Sylvia resolves to begin an exercise...Ch. 20 - 3. Mr. Perkins is a large, 62-year-old man with a...
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- Fill in the Gaps Cardiac Output Place one word in each blank line to complete the following sentences. Choose from the words listed in the Word Bank. (Hint: Not all the words will be used; also, one word will be used more than once.) CARDIAC OUTPUT FIVE PARASYMPATHETIC SYMPATHETIC DECREASES HEART RATE SIX TEN EIGHT INCREASES STROKE VOLUME 1. The amount of blood ejected with cach heartbeat is called . 2. The amount of blood the heart pumps in 1 minute is called. 3. To determine cardiac output, you would multiply - by 4. The average resting cardiac output is berween. liters per minute. and 5. When heart rate increases, cardiac output. 6. The nervous system can cause the heart rate to increase by sending impulses via the - nervous system. 7. The -nervous system sends signals to slow the heart rate. lluminate the Truth Stroke Volume Highlight the correct word in each of the following sentences. 1. (Preload)(Afterload) is the amount of tension, or stretch, in the ventricular muscle just…arrow_forwardThe ECG records the electrical stimulation of cardiac muscle by the conduction system and not the contraction of the muscle itself. True or Falsearrow_forwardIndicate the correct order of the sequence of events occurring during congestive heart failure. Order the sentences (Hint: End with "g") This question is a great summary of what happens, in steps, in congestive heart failure. a. narrowed bicuspid valve makes the L atrium pump harder in order to "push" blood into the L ventricle through an opening that is too narrow. b. pressure of the extra, backed up blood in the lung creates pressure in the capillaries that begin to leak fluid into the lung. c. extra "left-over" blood in the atrium that has not descended into the ventricle after a beat has nowhere to go. d. congenital heart defect causes a narrowed bicuspid valve e. not all blood gets "pushed" from the L atrium to the L ventricle during a regular heart beat f. blood that backed up in the L atrium with nowhere to go backs up further, into the pulmonary veins and eventually into the lung g. the patient gets less oxygen with each breath, feels tired all the time and is…arrow_forward
- 67-year-old diagnosed with an irregular heart rhythm. For the past month, she has been taking the following medications for management of her heart condition: Digoxin 0.25mg once daily Warfarin (Coumadin) 5mg once daily During her F/U visit, you notice that Mrs. Pender has developed purpura on her arms & lower legs. When you ask her about these “purple spots” she states that she started noticing them about a week ago. The provider has ordered serum LFTs & renal function tests 1.Based on the knowledge of drug pharmacokinetics, how should the nurse explain to the patient the possible cause of the purpura? 2.Mrs. Pender’s renal function test results show mild kidney impairment. What changes can the nurse anticipate regarding the patient’s medication regimen? 3.The patient asks the nurse, “Why did you have to check the function of my liver?” What is the most appropriate response by the nurse?arrow_forwardThe ECG records the electrical stimulation of cardiac muscle by theconduction system and not the contraction of the muscle itself. True or Falsearrow_forwardFill in the blank: The period during which a heart chamber is relaxing is called _______________________.arrow_forward
- Idenitfy each structure (1,2, and 3) on the heart modelarrow_forwardChoose the letter of the correct answer. STATEMENT A B C D Arterial blood pressure is independent of Blood volume Heart rate Blood viscosity Influx of calcium ions Identify the TRUE statement(s). There may be several correct answers. An increased cardiac output is reflected in an elevated diastolic pressure. An increased cardiac output is reflected in a decreased diastolic pressure. An increase in the force of contraction produces an elevated systolic pressure. An increase in the force of ventricular contraction produces decreased diastolic pressure. In the absence of compensations, the stroke volume will decrease when Blood volume increases Venous return increases Contractility increases Arterial blood pressure increasesarrow_forwardIn the image attached help me locate the anterior ventricular artery and draw a thrombosis in that artery and then shade the area of the heart that would experience a myocardial infarction. Thanksarrow_forward
- Hello, May I get help please? Scenario: Jamal M. has a disorder that rapidly closes the L-type voltage-gated channels on his contractile myocardial fibers. He knows this might affect some stuff in his heart, but he's unsure exactly what to expect. You should tell Jamal that he should expect…arrow_forwardResting heart rate that is provided is 78arrow_forwardThe following is an abnormal ECG. Based on this abnormality, what would you guess heart rate to be?arrow_forward
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