Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 14, Problem 11RA
Summary Introduction
To determine:
The variation in blood flow within the cerebral circulation.
Introduction:
Blood is the major transporting medium in the body. It is involved in the transportation of oxygen, hormones, electrolytes and other substances. All the tissues of the body require oxygen in order to perform efficiently. Brain is the most complex structure of the body and needs a constant supply of oxygen.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Which of the following is true of propagation of longitudinal electrical flow in cardiac muscle.
A.
Current flows longitudinally from a region of depolarization through ryanodine receptors.
B.
Longitudinal current flows through inward rectifier potassium channels.
C.
This current can be detected at the body surface, if the source is large enough.
D.
A and B.
E.
All are true.
Increased parasympathetic stimulation of the hearta. increases the force of ventricular contraction.b. increases the rate of depolarization in the SA node.c. decreases heart rate.d. increases cardiac output
In the absence of compensations, the stroke volume will decrease when a. blood volume increases. b.venous return increases. c. contractility increases. d.arterial blood pressure increases.
Chapter 14 Solutions
Human Physiology
Ch. 14 - Prob. 1CPCh. 14 - Prob. 2aCPCh. 14 - Describe how the stroke volume is intrinsically...Ch. 14 - Define the terms preload and afterload and explain...Ch. 14 - Prob. 3CPCh. 14 - Prob. 4aCPCh. 14 - Define the term edema and describe four different...Ch. 14 - Prob. 5aCPCh. 14 - Prob. 5bCPCh. 14 - Prob. 5cCP
Ch. 14 - Prob. 6aCPCh. 14 - Prob. 6bCPCh. 14 - Prob. 7aCPCh. 14 - Prob. 7bCPCh. 14 - Define autoregulation and explain how this process...Ch. 14 - Describe blood flow and oxygen delivery to the...Ch. 14 - Prob. 9aCPCh. 14 - Describe the mechanisms that produce vasodilation...Ch. 14 - Prob. 9cCPCh. 14 - Define the term autoregulation and describe how...Ch. 14 - Prob. 10bCPCh. 14 - Prob. 11CPCh. 14 - Prob. 12aCPCh. 14 - Prob. 12bCPCh. 14 - Prob. 13aCPCh. 14 - Prob. 13bCPCh. 14 - Prob. 14CPCh. 14 - Prob. 15aCPCh. 14 - Prob. 15bCPCh. 14 - Prob. 15cCPCh. 14 - Prob. 16CPCh. 14 - Prob. 1RACh. 14 - In the absence of compensations, the stroke volume...Ch. 14 - Prob. 3RACh. 14 - Prob. 4RACh. 14 - Prob. 5RACh. 14 - Prob. 6RACh. 14 - Prob. 7RACh. 14 - The sounds of Korotkoff are produced by...Ch. 14 - Prob. 9RACh. 14 - Blood flow in the coronary circulation...Ch. 14 - Prob. 11RACh. 14 - Prob. 12RACh. 14 - Prob. 13RACh. 14 - Prob. 14RACh. 14 - Prob. 15RACh. 14 - Blood pressure is lowest in
Ch. 14 - Prob. 17RACh. 14 - Prob. 18RACh. 14 - Prob. 19RACh. 14 - The pulse pressure is a measure of
Ch. 14 - Define the terms contractilily, preload, and...Ch. 14 - Prob. 22RACh. 14 - Which part of the cardiovascular system contains...Ch. 14 - Prob. 24RACh. 14 - Prob. 25RACh. 14 - Prob. 26RACh. 14 - Prob. 27RACh. 14 - Prob. 28RACh. 14 - Prob. 29RACh. 14 - Prob. 30RACh. 14 - Prob. 31RACh. 14 - Prob. 32RACh. 14 - Prob. 33RACh. 14 - Prob. 34RACh. 14 - Prob. 35RACh. 14 - Prob. 36RACh. 14 - Prob. 37RACh. 14 - As described in chapter 8, functional magnetic...Ch. 14 - Prob. 39RACh. 14 - Athletes often have a slower resting cardiac rate...Ch. 14 - Prob. 41RACh. 14 - Prob. 42RACh. 14 - Prob. 43RACh. 14 - Prob. 44RACh. 14 - Prob. 45RACh. 14 - Prob. 46RA
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Vasodilation in the heart and skeletal muscles during exercise is primarily due to the effects of a. alpha-adrenergic stimulation. b. beta-adrenergic stimulation. c. cholinergic stimulation. d. products released by the exercising muscle cells.arrow_forwardThe delivery of blood by the left ventricle into the sorta is intermittent, whereas blood flow in the peripheral circulation is usually continuous. Which of the following best explains this difference? A. Arteries contain more elastic tissue than veins . B Capillary walls contain little elastic or muscular tissue . C. Continuous flow is needed to meet metabolic requirements. D. Passive recoil of the arteries delivers blood to the periphery during diastole E . Rhythmic contractions of arterial smooth muscie increase the diastolic pressure to above zeroarrow_forwardAll of the following are true except A. The cardiac control center is located in the medulla B. Baroreceptors are located in the carotid artery only C. Baroreceptors are located in the blood vessels D. They carotid sinus baroreceptors are innervated by CN IX Choose the correct answerarrow_forward
- When blood pressure drops after an injury, the body's response to re-adjust the pressure is increased sympathetic stimulation resulting in (ie. how does the body respond to low blood pressure to bring it back up?) O a. decreased arteriolar dilation and increased cardiac output O b. decreased arteriolar dilation and decreased cardiac output O c. increased arteriolar dilation and decreased cardiac output O d. increased arteriolar dilation and increased cardiac outputarrow_forwardWhich cell types are associated with spontaneous action potential generation in the absence of an external stimulus from other tissues. A. Sino-Atrial node cells (SA node). B. Atrial cells C. Ventricular cells. D. Endothelial cells. E. A and D.arrow_forwardThe effects of the sympathetic and parasympathetic neurons on the heart can best be described as a. antagonistic b. identical c. cooperative d. adrenergicarrow_forward
- Which of the following statement/s is/are not true about regulation of heart rate? A. The brainstem contains the cardiac centers which are the accelerator center and the inhibitory center. (medulla) B. Sympathetic impulses to the heart increase rate and force of contraction. C. Parasympathetic impulses from cranial nerve X to the heart causes reduction in the heart rate. D. The cranial nerve IX is motor for the carotid receptors. (sensory)arrow_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_forwardStroke volume is thea. amount of blood pumped by the heart per minute.b. difference between end-diastolic and end-systolic volume.c. difference between the amount of blood pumped at rest and thatpumped at maximum output.d. amount of blood pumped from the atria into the ventriclesarrow_forward
- Cardiac output is determined by: A. Return of blood to the heart and the heart rate B. Strength of contraction of the left ventricle C. Stroke volume and heart rate D. Systolic discharge and stroke volumearrow_forwardIf both sympathetic and parasympathetic innervation to the heart conductive system were removed, which of the followings will take place at the heart? O a. Cardiac output will decrease. O b. Stroke volume will increase. O c. SA node will stop functioning. d. Heart rate will increase up to 100beats/min. e. Heart will stop beating.arrow_forwardDecreasing blood pressure to the Aortic Arch & Carotid Sinuses should reflexly: decrease heart rate & increase stroke volume increase vascular resistance & decrease heart rate decrease stroke volume & decrease vascular resistance A. B. C. D. increase cardiac output & increase vascular resistance Using the Baro-receptor feedback mechanism, the parasysmpathetic nervous system can affect which of the following variables to adjust blood pressure? A. heart rate stroke volume vascular resistance B. C. D. contractility An individual possessing only the A & B antigens is said to be of which blo fype? A. A+ В. AB+ С. AB- D.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education