SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Question
Chapter 21, Problem 21RAC
Summary Introduction
Introduction:
Hormones released by endocrine glands play a crucial role in maintaining homeostasis as well as maintaining normal physiology. Some hormones released by adrenal glands have their importance during emergency situations.
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a 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 contractility
Which of the following statements is false? a. The sympathetic nervous system releases epinephrine and norepinephrine, which are positive chronotropic and inotropic agents. b. The endocrine system regulates cardiac output through chronotropic and inotropic hormones and through hormones that regulate water balance .c. The parasympathetic nervous system releases acetylcholine,which is a strongly negative inotropic agent. d. Factors such as electrolyte concentrations, body temperature,and age all affect cardiac output.
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.
Chapter 21 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 21.1 - What is the difference between pulmonary and...Ch. 21.1 - Describe the five functions of the circulatory...Ch. 21.2 - Prob. 3AYPCh. 21.2 - Prob. 4AYPCh. 21.2 - Prob. 5AYPCh. 21.2 - Prob. 6AYPCh. 21.2 - Prob. 7AYPCh. 21.2 - Describe a capillary network. Where is the smooth...Ch. 21.2 - Prob. 9AYPCh. 21.2 - Prob. 10AYP
Ch. 21.2 - Prob. 11AYPCh. 21.2 - Prob. 12AYPCh. 21.2 - In which type of blood vessels are valves found?...Ch. 21.2 - Prob. 14AYPCh. 21.2 - Prob. 15AYPCh. 21.2 - Prob. 16AYPCh. 21.3 - Prob. 17AYPCh. 21.4 - Name the parts of the aorta.Ch. 21.4 - Name the arteries that branch from the ascending...Ch. 21.4 - Prob. 20AYPCh. 21.4 - Prob. 21AYPCh. 21.4 - Prob. 22AYPCh. 21.4 - Prob. 23AYPCh. 21.4 - Name the two types of branches arising from the...Ch. 21.4 - Prob. 25AYPCh. 21.4 - Prob. 26AYPCh. 21.4 - Prob. 27AYPCh. 21.5 - Prob. 28AYPCh. 21.5 - What veins collect blood from the heart muscle.Ch. 21.5 - Prob. 30AYPCh. 21.5 - Prob. 31AYPCh. 21.5 - Prob. 32AYPCh. 21.5 - Prob. 33AYPCh. 21.5 - Prob. 34AYPCh. 21.5 - Prob. 35AYPCh. 21.6 - Prob. 36AYPCh. 21.6 - Prob. 37AYPCh. 21.6 - Prob. 38AYPCh. 21.6 - Prob. 39AYPCh. 21.6 - Prob. 40AYPCh. 21.6 - Prob. 41AYPCh. 21.6 - Prob. 42AYPCh. 21.6 - Prob. 43AYPCh. 21.7 - Prob. 44AYPCh. 21.7 - Describe the total cross-sectional areas of the...Ch. 21.7 - Describe how the rate changes as blood flows...Ch. 21.7 - Prob. 47AYPCh. 21.7 - Prob. 48AYPCh. 21.7 - Prob. 49AYPCh. 21.7 - What is pulse pressure? How do stroke volume and...Ch. 21.7 - Prob. 51AYPCh. 21.7 - Prob. 52AYPCh. 21.7 - Prob. 53AYPCh. 21.7 - Prob. 54AYPCh. 21.7 - Prob. 55AYPCh. 21.7 - Prob. 56AYPCh. 21.7 - Prob. 57AYPCh. 21.8 - Prob. 58AYPCh. 21.8 - Prob. 59AYPCh. 21.8 - Prob. 60AYPCh. 21.8 - Prob. 61AYPCh. 21.8 - Prob. 62AYPCh. 21.9 - Prob. 63AYPCh. 21.9 - What are the two major control systems that...Ch. 21.9 - Prob. 65AYPCh. 21.9 - Elaborate on the adrenal medullary control...Ch. 21.9 - Prob. 67AYPCh. 21.9 - Prob. 68AYPCh. 21.9 - Prob. 69AYPCh. 21.9 - Prob. 70AYPCh. 21.9 - Prob. 71AYPCh. 21.9 - Prob. 72AYPCh. 21.9 - Prob. 73AYPCh. 21 - Prob. 1RACCh. 21 - Prob. 2RACCh. 21 - Prob. 3RACCh. 21 - Prob. 4RACCh. 21 - The structures that supply the walls of blood...Ch. 21 - Given these arteriae: (l) brailar (2) common...Ch. 21 - Prob. 7RACCh. 21 - A branch of the aorta that supplies the liver,...Ch. 21 - Prob. 9RACCh. 21 - Prob. 10RACCh. 21 - Blood returning fromthe arm to the subclavian vein...Ch. 21 - Given these blood vessels: (1) inferior mesenteric...Ch. 21 - Given these veins: (1) small saphenous (2) great...Ch. 21 - Prob. 14RACCh. 21 - Prob. 15RACCh. 21 - Veins a. increases their volume because of their...Ch. 21 - Prob. 17RACCh. 21 - Prob. 18RACCh. 21 - Prob. 19RACCh. 21 - Prob. 20RACCh. 21 - Prob. 21RACCh. 21 - Prob. 22RACCh. 21 - Prob. 23RACCh. 21 - Prob. 24RACCh. 21 - Prob. 25RACCh. 21 - Prob. 1CTCh. 21 - Prob. 2CTCh. 21 - Prob. 3CTCh. 21 - All the blood that passes through the aorta,...Ch. 21 - As blood vessels increase in diameter. the amount...Ch. 21 - A very short nursing student is asked to measure...Ch. 21 - Prob. 7CTCh. 21 - Prob. 8CTCh. 21 - Epinephrine causes vasodilation of blood vessels...Ch. 21 - Prob. 10CTCh. 21 - Prob. 11CT
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- Vagal stimulation increases: A. Heart rate. B. Stroke volume. C. Sympathetic tone. D. All of the above. E. None of the above.arrow_forwardWhich of the following is likely to decrease blood pressure? A. High concentraion of ADH in the blood B. Body wide vasoconstriction C. Vagal inhibition D. Increased cardiac outputarrow_forwardMark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The sympathetic nervous system increases blood pressure in the short term by increasing cardiac output and peripheral resistance. b. A sudden increase or decrease in blood pressure triggers the baroreceptor reflex, which is mediated by the medulla and the autonomic nervous system. c. Hormones that decrease blood volume and blood pressure include antidiuretic hormone and aldosterone. d. Angiotensin-II is a chemical that produces profound vasoconstriction. e. The kidneys control blood pressure directly through adjustment of blood volumearrow_forward
- parasympathetic nerve stimulation in the heartt will result in A.decreased heart rate B.increased vescular resistence . C. decrease venous tone D. both a and barrow_forwardAn increase in extracellular potassium levels can causea. an increase in stroke volume.b. an increase in force of contraction.c. a decrease in heart rate.d. Both a and b are correct.arrow_forwardThe atrioventricular node is located in the: A. right atrium B. right ventricle C. septum between the right and left atrium D. juncture between the right atrium and ventricle Preganglionic parasympathetic neurons release NT that binds to: A. nicotinic acetylcholine ligand-gated receptors B. muscarinic acetylcholine GPCRs C. beta-1 norepinephrine GPCRs D. norepinephrine ligand-gated receptorsarrow_forward
- 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 outputarrow_forwardThe effects of the sympathetic and parasympathetic neurons on the heart can best be described as a. antagonistic b. identical c. cooperative d. adrenergicarrow_forwardDuring surgery, the right vagus nerve was accidently cut. Explain the effect on the heart rate. a. There is no change to the heart rate because the vagus nerve does not innervate the heart. b. The heart rate increases to the inherent rhythm of SA nodal cells. c. The heart stops beating, and the heart rate becomes zero. d. The heart rate decreases to the inherent rhythm of SA nodal cells.arrow_forward
- Ventricular cardiomyocytes under sympathetic drive during a bout of exercise... a. Would collectively make more force than at rest due to recruitment of more cardiomyocytes b. Would relax faster due to phosphorylation of the cardiac ryanodine receptors c. Would pump out more SV despite a decrease in EDV d. Would show an increased rate of myosin ATPase activity due to phosphorylation of the calcium ATPase pumps e. Would have elevated levels of cAMP and kinase activityarrow_forwardWhich of the following would not increase Cardiac Output? A. increase blood epinephrine concentration B. Increase Atrial Preload C. Increase Cardiac sarcoplasmic calcium concentration D. Increase Arterial Afterloadarrow_forwardSelect the correct one, Which of the following would not increase Cardiac Output? A. increase blood epinephrine concentration B. Increase Atrial Preload C. Increase Cardiac sarcoplasmic calcium concentration D. Increase Arterial Afterloadaarrow_forward
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