10. If given a diagram of the heart, such as the one below, be able to identify each of thefollowing parts of the conduction system:• sinoatrial (SA) node••.spread of SA through the 2atriaatrioventricular (AV) node●•••11. Trace the flow of impulses through the conduction system (step by step) and includeat what points the following happen:2 atria contract togetherAV node delay occursAV bundle (=bundle of His)bundle branchesPurkinje fibersFocusF

The heart works like a pump and like any pump it needs electric conduction to carry out its…

Answered: 10. If given a diagram of the heart,…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

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

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As we auscultate the heart it is imperative, we understand what part of the heart we are listening to. Cellular senescence is observed when there is obstruction of the coronary circulation to the muscle tissue of the heart. If the left anterior descending artery (a.k.a. “Widow maker”) is occluded, predict an alternative route of blood flow to the myocardium. Start from the left coronary artery.
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8. We discussed fish, amphibian, and mammalian hearts, but didn’t spend much time on reptiles and birds. Please compare and contrast the anatomy of the heart ina) most reptiles (turtles, snakes, lizards) in terms of number of atria, number of ventricles, total number of chambers, and development of the aorta from aortic arches (left, right, or both). Use a table, not text. Also, include a drawing showing the basic template of dorsal aorta, ventral aorta, and six aortic arches, along with drawings showing the modified patterns of aortic arches in a-d above.
2. Put the following structures in the proper order (#1-21) in which blood flows through the cardiovascular system. 1 Right atrium Left ventricle 21 Vena cava Pulmonary trunk Tricuspid valve Systemic capillaries Pulmonary capillaries 19 Systemic venules Pulmonary arteries Right ventricle Aortic valve Aorta Pulmonary veins Mitral valve Systemic veins 17 Systemic arterioles _9_ Pulmonary venules Pulmonary valve Left atrium Systemic arteries Pulmonary arterioles 3. Identify structures of the heart on the following pictures. A. В. C. D. B E. D. F. Н. G I. J. A. B. -E C. D. E. F. G. H. I. J.
Mr Rupinder Patel is a 70 year old retired businessman. He has a past medical history of Congestive Cardiac Failure (CCF). This developed after he experienced a two myocardial infarctions 8 years ago. Both ventricles were affected. The death of his wife 2 years ago has led to Rupinder experiencing several episodes of depression which has been exacerbated by his sons both moving to Western Australia for work. The loneliness and sadness makes it difficult for him to be concordant with his CCF management and sustain the necessary lifestyle adjustments required to prevent exacerbations. This has resulted in several admissions to hospital for management and review of his CCF. For this current admission, Mr Patel was referred to hospital by his Nurse Practitioner, after recently rapidly gaining weight (currently 110kg), since his previous visit. The time now is 0800 and you have just come on for your morning shift. Mr Patel has been on the ward for only two hours after spending…
1. You should be able to distinguish two heart sounds. The first sound is when the ventricle begins contracting (ventricular systole) the atrioventricular valves snap shut. This closing produces a low-pitched sound, the "lub" sound. The atrioventricular valves close when the ventricles contract due to pressure coming from the blood in the: Group of answer choices veins ventricles arteries atria 2. The "lub" sound is accompanied by the pulmonary and aortic (semilunar) valves opening. This, too, happens when the ventricles contract. These valves open due to pressure of the blood coming from the: Group of answer choices atria ventricles arteries veins 3. The second sound you hear in the heartbeat is when the ventricles begin to relax (diastole). The closing of the pulmonary and aortic (semilunar) valves produces a sound, the "dub" sound. These valves close when the ventricles relax due to the pressure of the blood coming from the: Group of answer choices atria…
2. How is an action potential in a contractile cardiac cell different from action potential in a pacemaker cell? (Write the phases and the channels involved for each phase).
18. Under the microscope, I can see a section through one of the chambers of the heart. The myocardium is thick and the endocardium is very thin. In addition, I can see a valve that connects this chamber to the next which has two cusps that prevent backflow from one chamber into another. Where in the heart am 1? What does the thickness of the myocardium tell you about this region of the heart? What is the valve called? What does it do? What other valve would you see in this area of the heart? Where is it situated?
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10. Segment representing the time heart muscle is electrically silent 18. Waveform representing total ventricular SYSTOLE 19. Repolarization of the atria is found within which wave 20. Firing of the AV node occurs at the apex of which wave 19. Repolarization of the atria is found within which wave 20. Firing of the AV node occurs at the apex of which wave
5. Describe the conductions of electrical signals through the heart. answer this question with a narrative of the structures involved in initiating and coordinating the contraction of the heart. You need to include the function of each structure. Mention pacemaker cells, the sinoatrial node, atrioventricular node, internodal pathway, bundle of His, bundle branches, Purkinje fibers, first degree block, second degree block, and third degree block.

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