EBK BIOLOGY
10th Edition
ISBN: 8220100474729
Author: Martin
Publisher: Cengage Learning US
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Chapter 42, Problem 5TYU
Summary Introduction
Introduction: Nervous system consists of different types of neural networks that consist of the different kind neuron. Each type performs a different function in the neural system.
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After stimulating the vagus nerve, which of the following occurred to the heart rate? (the directions state to wait for 2 full passes across the oscilloscope - wait for at least 4-5).
(A) heart rate increased
(B) heart rate decreased
(C) heart rate decreased and then stopped
Which of the following statements are true? (a) The left ventricle wall is thicker than the right ventricle wall. (b) The left ventricle pumps blood at a higher pressure than the right ventricle. (c) The left ventricle pumps more blood with each beat than the right ventricle. Explain.
The autonomic centers for cardiac function are located in, (a) myocardial tissue of the heart. (b) cardiac center of the medulla oblongata. (c) the cerebral cortex. (d) a, b, and c are correct.
Chapter 42 Solutions
EBK BIOLOGY
Ch. 42.1 - Prob. 1LOCh. 42.1 - Identify trends in the evolution of invertebrate...Ch. 42.1 - Prob. 1CCh. 42.1 - Prob. 2CCh. 42.1 - What are some advantages of cephalization?Ch. 42.2 - Prob. 3LOCh. 42.2 - Prob. 1CCh. 42.2 - Describe the functions of each component of the...Ch. 42.3 - Prob. 4LOCh. 42.3 - Prob. 1C
Ch. 42.3 - Prob. 2CCh. 42.4 - Prob. 5LOCh. 42.4 - Prob. 6LOCh. 42.4 - Prob. 7LOCh. 42.4 - Prob. 8LOCh. 42.4 - Prob. 9LOCh. 42.4 - Prob. 1CCh. 42.4 - What are two main functions of the vertebrate...Ch. 42.4 - Prob. 3CCh. 42.4 - What role does the limbic system play in emotions?...Ch. 42.4 - In what ways does your success on a biology exam...Ch. 42.5 - Describe the organization of the peripheral...Ch. 42.5 - Prob. 11LOCh. 42.5 - Prob. 1CCh. 42.5 - Prob. 2CCh. 42.6 - Prob. 12LOCh. 42.6 - Prob. 1CCh. 42 - Test your Understanding Know and Comprehend A...Ch. 42 - Which part of the vertebrate brain maintains...Ch. 42 - The main association area in the amphibian brain...Ch. 42 - Prob. 4TYUCh. 42 - Prob. 5TYUCh. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Test Your Understanding 8. VISUALIZE Label the...Ch. 42 - Prob. 9TYUCh. 42 - Prob. 10TYUCh. 42 - Prob. 11TYUCh. 42 - EVOLUTION LINK CREB has been shown to be a...Ch. 42 - Prob. 13TYU
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- Based on what we learned in this lecture, what is likely to happen to the heart rate in Patient SM (with bilateral amygdala destruction) when she travels in a dangerous environment? a.) increase b.) decrease c.) unchangedarrow_forwardIf the vagal nerves to the heart were cutthe result would be that A) the heart would stop, since the vagal nerves trigger the heart to contract B) the AV node would become the pacemaker of the heart D) the heart rate would not be affected E) the heart rate would increasearrow_forwardRoberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers. Which of these statements is most likely true of Roberto’s current symptoms? He doesn’t experience any symptoms at all at rest or during exercise. He has no symptoms at all during rest, but experiences palpitations, fatigues, and shortness of breath during mild exercise. He experiences fatigue, shortness of breath, and palpitations at rest and is not able to participate in any physical activity.arrow_forward
- The amount of blood forced out of the heart depends on the, (a) degree of stretching at the end of ventricular diastole. (b) contractility of the ventricle.(c) amount of pressure required to eject blood. (d) a, b, and c are correct.arrow_forwardWhich nerve(s) transmit an action potential from the brain to the heart? a) the vagus nerve only b) the vagus and glossopharyngeal nerves c) the vagus and phrenic nerves d) the phrenic and glossopharyngeal nerves e) the phrenic nerve onlyarrow_forwardCardiac output cannot increase indefinitely because (a) available filling time becomes shorter as the heart rate increases. (b) the cardiac center adjusts the heart rate. (c) the rate of spontaneous depolarization decreases. (d) the ion concentrations surrounding pacemaker plasma membranes decrease.arrow_forward
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- (i) A scene of a TV drama showed that a heart continues to beat when it was ripped from a brain-dead patient. Is that possible? Elaborate your answer.arrow_forwardDescribe the action potential of an autorhythmic cell in the heart.a) Indicate how the opening and closing of each ion channel affects the membrane potential of the cell.b) Provide one similarity between the action potential of an autorhythmic cell and the action potential of a neuron.c) Provide one difference between the action potential of an autorhythmic cell and the action potential of a neuron.arrow_forwardFill in the following blanks (a - f) regarding the Baroreceptor Reflex Control: The baroreceptor reflex control is a negative feedback loop. If the patient is hypotensive, they are experiencing a decrease in blood pressure detected by (a.)_ located in the aortic and carotid bodies. The afferent pathways include the (b.)_ nerve and the (c.)__ nerve. These synapse at the cardioregulatory and vasomotor integration centers located in the (d.)_ These centers will cause the heart rate to (e.)(increase/decrease) and blood vessels to (f.) (vasodilate/vasocontrict). For the toolbar press ALT+510 (BC) or ALTHEN±+510/Madarrow_forward
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