Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 17, Problem 1AYKA
Summary Introduction
To review:
The effects of a very rapid heart rate.
Introduction:
A cardiac cycle is the pumping of blood in and out of the heart. The oxygenated blood is supplied to the different body parts and the deoxygenated blood is supplied to the heart from where it goes to the lungs for purification. About 60–80 cardiac cycles occur in 1minute in a normal adult human being, which is described as the heart rate.
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Chapter 17 Solutions
Human Anatomy & Physiology
Ch. 17.1 - Where is the heart located, and how large is it?Ch. 17.1 - What are the hearts upper and lower chambers...Ch. 17.1 - 3. From what sources does blood flow into the...Ch. 17.1 - 4. Which side of the heart is considered the...Ch. 17.1 - Which side of the heart is considered the systemic...Ch. 17.2 - Prob. 1QCCh. 17.2 - Prob. 2QCCh. 17.2 - 3. What are the three layers of the heart wall,...Ch. 17.2 - 4. What are the four main great vessels? From...Ch. 17.2 - How do the right and left ventricles differ in...
Ch. 17.2 - 6. Why do you think it is important to ensure via...Ch. 17.2 - 7. What is the overall pathway of blood flow...Ch. 17.2 - Prob. 4QCCh. 17.2 - Prob. 5QCCh. 17.2 - Prob. 6QCCh. 17.3 - How do pacemaker and contractile cells differ?...Ch. 17.3 - 2. What are intercalated discs? What is their...Ch. 17.3 - Prob. 5QCCh. 17.3 - Prob. 6QCCh. 17.3 - What is the sequence of events of a contractile...Ch. 17.3 - How does the refractory period of cardiac muscle...Ch. 17.3 - 7. What does an ECG record?
Ch. 17.3 - What are the five waves in an ECG, and what do...Ch. 17.4 - What causes the heart sounds S1 and S2?Ch. 17.4 - Prob. 2QCCh. 17.4 - Prob. 3QCCh. 17.4 - Is the end-diastolic or the end-systolic volume of...Ch. 17.4 - 5. Walk through the mechanical events of the...Ch. 17.4 - How do the ECG waves correlate with each part of...Ch. 17.4 - 7. How does the left ventricular pressure...Ch. 17.5 - Prob. 1QCCh. 17.5 - What is cardiac output? How does it relate to...Ch. 17.5 - Prob. 3QCCh. 17.5 - What is the Frank-Starling law, and how does it...Ch. 17.5 - What is a chronotropic agent?Ch. 17.5 - Prob. 6QCCh. 17.5 - 7. What effects does the parasympathetic nervous...Ch. 17.5 - How would a hormone that decreases the amount of...Ch. 17.5 - How is heart failure defined?Ch. 17 - 1. Mark the following statements as true or false....Ch. 17 - 2. The pericardial cavity is located between:
a....Ch. 17 - 3. Which of the following statements is true?
a....Ch. 17 - Match the following terms with the correct...Ch. 17 - Fill in the blanks: The coronary arteries are the...Ch. 17 - 6. How do pacemaker cardiac muscle cells differ...Ch. 17 - 7. Cardiac muscle cells are joined by structures...Ch. 17 - Prob. 8CYRCh. 17 - Prob. 9CYRCh. 17 - 10. The _________is the primary pacemaker of the...Ch. 17 - The AV node delay: a. allows the atria and...Ch. 17 - Explain what each of the following terms...Ch. 17 - 13. Mark the following statements as true or...Ch. 17 - Prob. 14CYRCh. 17 - 15. Fill in the blanks: The first heart sound is...Ch. 17 - Cardiac output is equal to: a. end-diastolic...Ch. 17 - Prob. 17CYRCh. 17 - 18. Which of the following statements is false?
a....Ch. 17 - 1. A birth defect called transposition of great...Ch. 17 - 2. Predict which would be more damaging to...Ch. 17 - 3. When the SA node doesn’t function properly, the...Ch. 17 - Prob. 4CYUCh. 17 - Prob. 1AYKACh. 17 - You are a nursing student in a hospital, and a...Ch. 17 - Prob. 3AYKACh. 17 - Prob. 4AYKB
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- What do you think are the clinical symptoms indicating that a person requires the surgical implantation of a mechanical pacemaker?arrow_forwardRoberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers. Briefly describe how beta-blockers will influence Roberto’s heart function, specifically the physiology of the ventricles.arrow_forwardRoberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers.Briefly describe how beta-blockers will influence Roberto’s heart function, specifically the physiology of the ventricles.arrow_forward
- If you were running late for lab and had to run to get there on time, the sympathetic neurons of your autonomic nervous system were likely activated and releasing norepinephrine; what immediate effect might this have had on the blood pressure measured in your brachial artery? Increased stroke volume and heart rate to decrease blood pressure Increased stroke volume and heart rate to increase blood pressure Decreased stroke volume and heart rate to decrease blood pressure Decreased stroke volume and heart rate to increase blood pressure DERMA personarrow_forwardRoberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers.Briefly describe how ACE-inhibitors will influence Roberto’s heart function.arrow_forwardAging is associated with significant changes in the heart’s performance during exercise. What are they?arrow_forward
- Mrs. Jennings, a diabetic patient, visited the doctor with complaints of increased palpitations, dizziness, constipation, and urinary problems. When all her test results came back clean, the doctor asked her to get a heart rate variability test done. Why do you think the doctor ordered this test? What has happened to Mrs. Jennings?arrow_forwardYou are wisely including a number of cardiovascular - based training routines to help a competitive frisbee athlete performance. The athlete writes you an email wondering why they need to do so much running and cardio-based circuits in practice ? Respond to the athlete by answering how cardiovascular training impacts: 1. Changes to heart structure 2. length of time for trainingarrow_forwardDuring emergency situations, even if the nerves to the heart have been severed, the heart rate will: Select one: a. stay the same. b. decrease. c. increase. d. lead to hypotension.arrow_forward
- 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_forwardRoberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers. Which of these statements is most likely true of Roberto’s current symptoms? He doesn’t experience any symptoms at all at rest or during exercise. He has no symptoms at all during rest, but experiences palpitations, fatigues, and shortness of breath during mild exercise. He experiences fatigue, shortness of breath, and palpitations at rest and is not able to participate in any physical activity.arrow_forwardYour 70-year-old neighbor, Mr. Michael, tells you he has been diagnosed with a second degree heart block. The physician told him he would need a pacemaker implanted. He knows you are a registered nurse and he wants you to explain pacemakers to him. He is worried he will not be able to use a cell phone. Describe for Mr. Michael what a pacemaker is and what precautions, if any, he has to take after the pacemaker is implanted.arrow_forward
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