FUND.OF ANATOMY AND PHYSIOLOGY >IC<
10th Edition
ISBN: 9781323413920
Author: Martini
Publisher: PEARSON C
expand_more
expand_more
format_list_bulleted
Question
Chapter 20, Problem 31RQ
Summary Introduction
To determine:
The effect of the drug Verapamil, on Karen’s stroke volume.
Introduction:
The stroke volume denoted as SV refers to the amount of blood that is pumped out of a ventricle at the time of every contraction. Contractility is defined as the amount of force that is formed at the time of contraction, at preload. Contractility, under normal conditions can be altered by the circulating hormones and autonomic innervations or drugs. Verapamil is one of the drugs that block the calcium ion channels in the cardiac cells.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A patient is taking a drug that blocks beta-adrenergic receptors. What changes in cardiac function will the drug cause?
State 3 factors that affect Stroke Volume
Why might exercising on a very hot day result in fainting?
Chapter 20 Solutions
FUND.OF ANATOMY AND PHYSIOLOGY >IC<
Ch. 20 - Prob. 1CPCh. 20 - Prob. 2CPCh. 20 - Why is the left ventricle more muscular than the...Ch. 20 - Prob. 4CPCh. 20 - Which structure of the heart is known as the...Ch. 20 - 6. If the cells of the SA node did not function,...Ch. 20 - Why is it important for impulses from the atria to...Ch. 20 - Give the technical terms for heart contraction and...Ch. 20 - List the phases of the cardiac cycle.Ch. 20 - Is the heart always pumping blood when pressure in...
Ch. 20 - What could cause an increase in the size of the...Ch. 20 - Define cardiac output.Ch. 20 - Prob. 13CPCh. 20 - Prob. 16CPCh. 20 - Prob. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 17CPCh. 20 - Prob. 18CPCh. 20 - Prob. 20CPCh. 20 - The great cardiac vein drains blood from the heart...Ch. 20 - The autonomic centers for cardiac function are...Ch. 20 - Prob. 5RQCh. 20 - Prob. 6RQCh. 20 - The heart is surrounded by the (a) pleural cavity,...Ch. 20 - The cardiac skeleton of the heart has which two of...Ch. 20 - Cardiac output is equal to the (a) difference...Ch. 20 - Identify the superficial structures in the...Ch. 20 - Identify the structures in the following diagram...Ch. 20 - During diastole, a chamber of the heart (a)...Ch. 20 - During the cardiac cycle, the amount of blood...Ch. 20 - What role do the chordae tendineae and papillary...Ch. 20 - Describe the three distinct layers that make up...Ch. 20 - What are the valves in the heart, and what is the...Ch. 20 - Trace the normal pathway of an electrical impulse...Ch. 20 - What is the cardiac cycle? What phases and events...Ch. 20 - What three factors regulate stroke volume to...Ch. 20 - The cells of the conducting system differ from the...Ch. 20 - Which of the following is longer? (a) the...Ch. 20 - If the papillary muscles fail to contract, (a) the...Ch. 20 - Cardiac output cannot increase indefinitely...Ch. 20 - Describe the function of the SA node in the...Ch. 20 - What are the sources and significance of the four...Ch. 20 - Differentiate between stroke volume and cardiac...Ch. 20 - What factors influence cardiac output?Ch. 20 - What effect does sympathetic stimulation have on...Ch. 20 - Describe the effects of epinephrine,...Ch. 20 - Vern is suffering from cardiac arrhythmias and is...Ch. 20 - Harvey has a heart murmur in his left ventricle...Ch. 20 - The following measurements were made on two...Ch. 20 - Prob. 31RQCh. 20 - Prob. 1CCCh. 20 - Prob. 2CC
Knowledge Booster
Similar questions
- Increasing Heart Rate through the cardioacceratory center of the medulla oblongata will a-increase Cardiac Output b-decrease Cardiac Output c-increase Stroke Volume d-decrease Venous Returnarrow_forwardWhat compensatory measures does the body employ in an attempt to restore cardiac output?arrow_forwardWhy diabetes is a significant risk factors for stroke?arrow_forward
- Hypertension increases afterload for the heart which in turn a-decreases Stroke Volume b-increases Stroke Volume c-increases Cardiac Output d-increases Venous Returnarrow_forwardIn response to a severe hemorrhage, blood pressure lowers, the heart rate increases dramatically, and the stroke volume lowers. If low blood pressure activates a reflex that increases sympathetic stimulation of the heart, why is the stroke volume low?arrow_forwardWhat happens to the stroke volume during exercise?arrow_forward
- Imagine that you are feeling very anxious as you walk to the podium to deliver a speech. If your heart rate increases to 100 beats per minute and your stroke volume is 100 mL per stroke, what is your cardiac output?arrow_forwardWhy is hypertension such a serious problem?arrow_forwardWhat changes in cardiac function might you expect after surgical replacement of a defective heart valve?arrow_forward
- You are taking care of a client with hypotension. The doctor ordered a drug that would increase cardiac contractility. Which of the following is/are would manage this condition and is considered an Alpha & Beta- adrenergic agonist? (Select all that apply) Dobutamine Ephedrine Dopaminearrow_forwardAfter a potential stroke you should make sure the person has something to eat and drink. True or False?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
- Essentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage