Herlihy: The Human Body in Health and Illness, 6th EditionChapter 17: Function of the HeartClassroom Activities: Word PuzzleDirections. Use the Clues in column 2 to complete the Words in column 1. Then use theletters in column 1 to decode the statements at the bottom. Indicate whether thestatements are true or false; if false, correct the statement. Do NOT merely insert theword NO for the correction of the false statements.WordsClues1 2 3 4 5Parasympathetic nerve that activatesthe muscarinic receptors in the heartAdrenergic neurotransmitterNoref.Kine6 7 8 9 10 11 12 13 14 15 16 17 18 19raction% of blood volume pumped by theventricle in one contraction; ejectio20 21 22 23 24 25 26 2728 29 30 31 32 33Amount of blood pumped by theventricle in one contraction;volume34 35 36 37 38 39 40 41 42An increase in force of contractionwithout increasing preload; a (+)effectSame as end-diastolic volume (EDV)43 44 45 46 47 48 4950 51 52 53 54 55 56 57A change in force of contraction thatis caused by the stretching of theventricular myocardium; thelaw of the heartMyocardial contraction58 59 60 61 62 63 64Receptors activated bynorepinephrine65 66 67 68Striated and involuntary69 70 71 72 73 74 75 76 77 78 Ventricular Fibrillation?JVD and what is it associated with?Atropine does what to the heart rate?Cardiac Output

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Human Anatomy & Physiology (11th Edition)

11th Edition

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Author:Elaine N. Marieb, Katja N. Hoehn

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Chapter1: The Human Body: An Orientation

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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Cardiomyocyte action potential 3 4 5 2 1 0.15 0.30 time (s) For our course, "regular" cardiocytes are cardiocytes that are NOT part of the SA node. Please use the word bank to complete the following statements: (choices can be used more than once, obviously) voltage-gated calcium channels voltage-gated sodium channels voltage-gated potassium channels stable not stable Unlike SA node cardiocytes, regular cardiocytes have a resting membrane potential that is Regular cardiocytes become stimulated when calcium and sodium pass fro neighboring excited cardiocytes through gap junctions (see 1). This causes to open, resulting in the regular cardiocytes to sharply depolarize (see 2). At 3, these channels close, and open, resulting in both depolarization and sarcomere contraction. Also at 3, open, causing the cell to repolarize. The opposing forces, (depolarization and repolarization) of the two channels that are open simultaneously, results in a plateau (see 4). This plateau continues until…
Activation of what adrenergic receptor directly causes stimulation of the heart? C-1 C-2 OB-1 O B-2
The rapid depolarization phase of heart pacemaker cells is caused by which of the following? movement of Na+ through funny channels movement of Ca++ through L-type channels movement of Na+ and Ca++ through funny channels movement of K+ through funny channels all of the above
Select the correct answer for each question. Explain why you chose that answer as opposed to the others. In other words, explain why the other choices are incorrect. The plateau phase of an action potential in cardiac muscle cells is due to the _____. Efflux of K+ through K+ channels Efflux of Ca2+ through fast Ca2+ channels Influx of Ca2+ through slow Ca2+ channels Influx of Na+ through fast Na+ channels
What is the function of the pulmonary circulation In a resting state, explain what happened to the heart rate when the stroke volume decreased. Why does this occur? DescribetheFlank-Starlinglawintheheart. Compare the structural features of the different chambers and valves of the heart and how this relates to their function. Explain the flow of the blood as it passes through the heart. Describe how the heart alters stroke volume under sympathetic stimulation. please answer the queations into 2 paragraphs. thanks.
Saved Help nich of the following statements is true about the regulation of the heart by the autonomic nervous system? Multiple Choice The autonomic nervous system initiates the heart's contractions. Sympathetic nerves release.norepinephrine at adrenergic nerve endings that decreases the activities of the sinoatrial and atrioventricular nodes. Parasympathetic nerves release acecholine at cholinergic nerve endings that decreases the activities of the sinoatrial and atrioventricular nodes. The heart is only regulated by the sympathetic nerves, not the parasympathetic nerves.
Coverings of the Heart SEROUS PERICARDIUM 4 VISCERAL PERICARDIUM: PERICARDIAL SPACE 5 PARIETAL PERICARDIUM 6 FIBROUS PERICARDIUM7 DIAPHRAGM 8 Wall of the Heart ENDOCARDIUM1 MYOCARDIUM 2 EPICARDIUM 3 AUL 7 6. 3 1 8
O Cardio_Phys 6 Unanswered Which of the following channels are involved in the action potential in contractile cells of the heart? A Na+ leak channels voltage-gated Na+ channels C voltage-gated Ca+2 channels D all of the above E B and C only
( explain well all point of question with step by step answer. )
I need help with a respiratory question, thank you, I really appreciate it Stroke volume can be calculated using which formula? Group of answer choices End-diastolic volume – end-systolic volume Ejection fraction × heart rate Ejection fraction × end-systolic volume Cardiac output ÷ end-diastolic volume
Pls help
A likely effect of parasympathetic input to the heart would be to _____. Open additional potassium channels in pacemaker cells Promote calcium entry in pacemaker and contractile cells There is no parasympathetic input to the heart Decrease force of ventricular contraction

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