Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
expand_more
expand_more
format_list_bulleted
Question
Chapter 18, Problem 4RQ
Summary Introduction
Introduction:
The components of the cardiopulmonary system may get stressed to their limits, during heavy exercise. The increased cardiac output decides the duration and intensity of the exercise. The circulatory system and muscles are equally important in setting up the limits for the exercise. There are some physiological changes that occur in response to the heavy exercise, in order to supply enough amount of blood to the muscles.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
At the onset of exercise, sympathetic discharge causes the 1. Heart rate to decrease 2. Peripheral vascular system to constrict3. Heart to increase its strength of contraction 4. Blood vessels of the working muscles to dilate A. 3 only B. 2 and 4 only C. 1 and 2 only D. 2, 3, and 4 only
The cardioinhibitor center of the medulla slows the heart by sending neural impulses by way of the 1. Tenth cranial nerve 2. Parasympathetic nervous system 3. Sympathetic nervous system 4. Vagus nerve A. 4 only B. 3 only C. 1 and 4 only D. 1, 2, and 4 only
When the systemic blood pressure increases, the aortic and carotid sinus baroreceptors initiate reflexes that cause a/an 1. Increased heart rate 2. Decreased ventilatory rate 3. Increased ventilatory rate 4. Decreased heart rate A. 1 only B. 2 only C. 3 only D. 2 and 4 only
Chapter 18 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 18 - Prob. 1RQCh. 18 - 2. The maximum alveolar ventilation generated...Ch. 18 - 3. During heavy exercise, the total cardiac output...Ch. 18 - Prob. 4RQCh. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - During exercise, the oxygen consumption (VO2) of...Ch. 18 - During very heavy exercise, the 1. pH increases 2....Ch. 18 - 9. During maximum exercise, the oxygen diffusion...Ch. 18 - During exercise, the P(A=a)O2 begins to increase...
Knowledge Booster
Similar questions
- 30. Antagonists are compound that a. Prevent synthesis of new receptors b. Prevents synthesis of hormones c. Bind to receptor, activating it d. Bind to a receptor, but do not activate it e. More than one answer is correct 33. When a hormone binds to an extracellular receptor, a. DNA produces mRNA b. The receptor-hormone complex causes ion channels to open or close c. The cell's response is faster than when a hormone binds to an intracellular receptor d. Answer a and b e. Answer b and c 38.A a. Fibrinogen clot is formed during the process of coagulation b. Fibrin c. Prothrombin d. Thromboplastin e. Thrombin 41. Electric signals move through the mammalian heart in a particular order. Which order is correct? a. SA node == AV node == atrial muscle == bundle of His = purkinje fibers 3%3D %3D%3D ventricular muscle b. SA node == atrial muscle == AV node == bundle of His = ventricular muscle = 3%3D %3%3D purkinje fibers c. SA node== atrial muscle==ventricular muscle== AV node == bundle of His…arrow_forwarda calcium channel blocker or an antagonist drug will produce a. vasoconstriction b. increase in blood pressure c. increase in total peripheral resistance d. reduction in cardiac muscle contractilityarrow_forwardWhich of the following describes a long term effect of regular exercise on the cardiovascular system?arrow_forward
- Medication to treat congestive heart failure include all except A. Angiotensin converting enzyme inhibitors B. Vasoconstrictors C. Beta blockers and calcium channel blockers D. Massive fluids Choose the correct answerarrow_forwardWhat is the cardiac output of a heart when the heartbeat rate is 60 beat.min-1, the diastolic pressure in the aorta is 80 mm Hg, and the stroke volume is 80 mL.beat-1? A. 4,800 mm Hg.min-1 B. 6,400 mL.mm Hg-1 C. 4,800 mL.min-1 D. 1.33 mL.beat-1 E. 0.75 mL.min-1arrow_forward26. Surgically providing a detour to allow blood to flow around a blocked coronary artery is a A. coronary bypass. B. defibrillation. C. angioplasty. ____ 27. The heart muscle is protected by the pericardium A. on the inside of the heart. B. which surrounds the heart. C. in the muscular layer of the heart. ____ 28. Hypoperfusion, or shock, results from A. inadequate blood flow carrying oxygen to the body systems. B. increased respiratory and heart rates. C. bleeding from blood vessels in the brain.arrow_forward
- Patients who had myocardial infarction is commonly given this medication. it is used to prevent clot formation in patients with damaged heart valves or blood vessels. a. digitalis b. amlodipine c. aspirin d. nitroglycerinarrow_forward1. Mechanisms that affect cardiac rate are said to have a chronotropic effect. A. TRUE. B. FALSE 2. Cardiac output is equal to A. stroke volume - heart rate. B. stroke volume / heart rate. C. stroke volume + heart rate. D. Stroke volume x heart rate 3. Mechanisms that affect the force of contraction of the heart are said to have a inotropic effect. A. TRUE. B. FALSE 4. The volume of blood in the ventricles at the end of diastole is known as the A. after-load. B. pre-diastolic volume (PDV). C. stroke volume (SV). D. end-diastolic volume (EDV). ortt zoih bolleo al enstroarrow_forwardcardiac output will increase by a. decreased blood volume and decrease of heart contractility b. decreased heart rate and contractility c. increased venous return and increased heart contractility d. decreased peripheral resistance and decreased venous returnarrow_forward
- Which of the following statements is true? a. The longer the vessel, the lower the resistance and the greater the flow. b. As blood volume decreases, blood pressure and blood flow also decrease. O c. Increased viscosity increases blood flow. d. All of the above are true What effect does fascicle arrangement have on a muscle's action? a. left atrium O b. left ventricle c. right atrium O d. right ventriclearrow_forwardNeed helparrow_forwardA patient has been in a serious car accident and is hemorrhaging. Which of the following changes would be seen in this patient? a. a decrease in stroke volume b. an increase in heart rate c. a possible decrease in cardiac output d. All of these are correct.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Essentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:Cengage
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