Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 44, Problem 7TYU
Summary Introduction
Introduction: Baroreceptors are the specialized receptors located in the arterial wall and on the lining of walls of heart chambers.
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Renin...
A) is a hormone which raises systemic blood pressure.
B) is a hormone which lowers systemic blood pressure.
C) is an enzyme which converts angiotensin I to angiotensin II.
D) is an enzyme which converts angiotensinogen into angiotensin I.
E) is none of the above.
Which of the following hormones results in a decrease in systemic blood pressure?
Choose from the following:
(A) anti-diuretic hormone
(B) aldosterone
(C) angiotensin II
(D) atrial naturietic peptide
Answer ALL parts of this question.
In terms of heart failure there is a decrease in cardiac output. This is due to a contractile deficit in the individual cardiac myocytes.
(a) Explain how this contractile deficit occurs.
(b) What common cardiac problem is often associated with the changes in calcium handling often seen in cardiac cells of heart failure patients? Explain how this problem arises.
(c) Describe the mechanism of action of levosimendan in the treatment of heart failure.
Chapter 44 Solutions
Biology (MindTap Course List)
Ch. 44.1 - Types of Circulatory Systems Contrast internal...Ch. 44.1 - Compare how oxygen is transported to the body...Ch. 44.1 - Prob. 2CCh. 44.1 - What are five functions of the vertebrate...Ch. 44.2 - Prob. 2LOCh. 44.2 - Summarize the sequence of events involved in blood...Ch. 44.2 - Prob. 1CCh. 44.2 - Prob. 2CCh. 44.2 - Prob. 3CCh. 44.3 - Prob. 4LO
Ch. 44.3 - Prob. 1CCh. 44.3 - Prob. 2CCh. 44.4 - Prob. 5LOCh. 44.4 - Prob. 1CCh. 44.5 - Prob. 6LOCh. 44.5 - Prob. 7LOCh. 44.5 - Prob. 8LOCh. 44.5 - Prob. 1CCh. 44.5 - PREDICT A patients mitral valve (left AV valve)...Ch. 44.5 - Prob. 3CCh. 44.6 - Prob. 9LOCh. 44.6 - Prob. 1CCh. 44.6 - Prob. 2CCh. 44.7 - Prob. 10LOCh. 44.7 - Prob. 1CCh. 44.7 - Prob. 2CCh. 44.8 - Prob. 11LOCh. 44.8 - Prob. 1CCh. 44.8 - Prob. 2CCh. 44.9 - Trace the progression of atherosclerosis and...Ch. 44.9 - Prob. 1CCh. 44.9 - Prob. 2CCh. 44 - Which of the following are most closely associated...Ch. 44 - Prob. 2TYUCh. 44 - Prob. 3TYUCh. 44 - Prob. 4TYUCh. 44 - Prob. 5TYUCh. 44 - Prob. 6TYUCh. 44 - Prob. 7TYUCh. 44 - Prob. 8TYUCh. 44 - Test Your Understanding 9. VISUALIZE Draw a simple...Ch. 44 - Prob. 10TYUCh. 44 - Prob. 11TYUCh. 44 - Prob. 12TYUCh. 44 - Test Your Understanding 13. SCIENCE, TECHNOLOGY,...
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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
- You are designing the arterial blood vessels that go to the kidney. The first part of kidney function involves a filtration mechanism that filters blood. To maximize this filtration mechanism, you want to maximize blood flow to the kidney. Using Poiseuille’s Law (on page 1), explain how you would construct the arterial circuit so that blood flow is maximized. Assume that blood viscosity (h) will not be changed.arrow_forwardSome kidney cells produce (a) antidiuretic hormone, (b) erythropoietin, (c) mineralocorticoids, (d) ANP.arrow_forwardWhich of the following would function to increase blood viscosity (and decrease blood flow rate) (A) dehydration and/or blood doping (B) aldosterone (C) atrial naturietic peptide (D) A and B (E) B and C (F) A and C (G) all of the abovearrow_forward
- What is not an action of angiotensin II? A. Vasoconstriction that increases arterial pressure B. Increases thirst C. Stimulates the release of vasopressin antidiuretic hormone D. Stimulate adrenal cortex to release aldosterone E. None of the abovearrow_forwardAlong a capillary, _____ dominates at the arterial end and fluid moves _____; _____ dominates at the venous end and fluid moves _____. (a) osmosis, in; filtration, out (b) filtration, out; osmosis, in (c) filtration, in; osmosis, out (d) osmosis, out; filtration, inarrow_forwardThe endocrine structure that secretes renin and erythropoietin is the: (a) juxtaglomerular complex. (b) vasa recta. (c) glomerular capsule. (d) adrenal gland.arrow_forward
- How does the hormone Angiotensin II affect MAP? Select only one answer. 1) it increases CO by increasing HR and SV 2) it decreases MAP by causing systemic vasodilation 3) it increases MAP by stimulating the kidneys to retain Na+ and therefore water which increases blood volume and therefore MAP 4) it increases MAP by causing rapid vasoconstrictionarrow_forwardWhat role does vasopressin play when there is a decrease in blood volume? a. It acts on kidneys to increase water retention. b. It excites magnocellular neurosecretory cells. c. It stimulates the sympathetic division of ANS. d. It motivates animals to shun water.arrow_forwardThe muscle cells of a heart chamber work as a functional syncytium. In terms of heart function this means... A) All the cardiac muscle cells are controlled by one motor neuron, resulting in coordinated contraction. B) All the cardiac muscle cells are electrically connected by gap junctions, resulting in coordinated contraction. C) All the cardiac muscle cells are stimulated to contract by hormone release, resulting in near-coordinated contraction. D) All the cardiac muscle cells contract independently of each other (fibrillation).arrow_forward
- The ion concentration gradient in the interstitial environment, ultimately drives the movement of _______ out of the descending limb of loop of henle and into the capillaries that directly recieve blood from the _______ arteriole (A) water, afferent (B) NaCl, afferent (C) water, efferent (D) NaCl, efferentarrow_forwardWhich of the following stimulates the release of Renin? a) Atrial Natriuretic Peptide (ANP) b) Angiotensin II OdA decrease in the concentration of sodium (Na") in the plasma O d) An increase in the amount of water in the bodyarrow_forwardWhich of the following is most likely to cause a decrease in blood pressure (BP)? O a) A decrease in parasympathetic activity O b) Activation of the cardioacceleratory centre (CAC) O c) Activation of the renin-angiotensin system (RAS) O d) An increase in blood vessel diameterarrow_forward
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