Observation 1. What is the Heart Rate? 2. What is the rhythm? Regular or Irregular? 3. How is atrial activity related to ventricular activity? Is there a P wave before each QRS? 4. Are P waves upright and uniform? 5. What is the length of the PR interval? 6. Do all QRS complexes look alike? 7. What is the length of the QRS complexes?

Observation 1. What is the Heart Rate? 2. What is the rhythm? Regular or Irregular? 3. How is atrial activity related to ventricular activity? Is there a P wave before each QRS? 4. Are P waves upright and uniform? 5. What is the length of the PR interval? 6. Do all QRS complexes look alike? 7. What is the length of the QRS complexes?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter44: The Circulatory System

Section: Chapter Questions

Problem 5TYK: The heartbeat includes: a. the systole when the heart relaxes and fills. b. the diastole when the...

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The heartbeat includes: a. the systole when the heart relaxes and fills. b. the diastole when the heart contracts and empties. c. pressure that causes the AV valves to open, filling the ventricles. d. rising pressure in the ventricles to open the AV valves and close the SL valves. e. the lub sound when the SL valves open and the dub sound when the AV valves close.
1. is the rhythm regular or irregular 2. determine the heart rate 3. do you have p waves before every QRS 4. Measure the PR interval 5. Measure the QRS duration 6. Are there any early or extra beats 7. is there normal r wave progression in V1-V6? 8. Are the ST segments elevated or depressed? 9. Are there any abnormal Q waves? 10.. Are the T waves of normal size? 11. Are there any U waves? 12. Is there evidence of myocardial ischemia, injury, or infarction? 13. Name this EKG.
1. rhythm regular or irregular2. determine the heart rate3. do you have p waves before every QRS4. Measure the PR interval5. Measure the QRS duration6. Are there any early or extra beats7. is there normal r wave progression in V1-V6?8. Are the ST segments elevated or depressed?9. Are there any abnormal Q waves?10. Are the T waves of normal size?11. Are there any U waves?12. Is there evidence of myocardial ischemia, injury, or infarction?13. Name this EKG.
Put these autorhythmic cells into the correct order for conveying electrical signals through a normal heart. 1. AV Bundle 2. internodal pathway 3. Purkinje fibers 4. atrioventricular node 5. sinoatrial nodes 6. left and right bundle branches 3, 6, 1, 4, 2, 5 5, 2, 4, 1, 6, 3 5, 4, 1, 6, 2, 3 5, 2, 1, 6, 4, 3
2.A. 1. 2. 3. 4. |||| ential (mv) 13. State the channels involved in an action potential in cardiac AUTORHYTHMIC cells, which ion moves across the channel, which direction each ion moves across the channel when the channel opens, the approximate membrane potential at which the channel is fully open. +20 !!| CE - | Channel AaBbCcDdEe AaBbCcD. AaBBCEDE Aal Emphasis Heading 1 Normal lon? Influx or Efflux? 14. Define the term pacemaker potential (=drifting potential) and be able to identify it when given a graph of an action potential in an autorhythmic cell such as the one below. I Membrane Potential at which channel opens or is fully open (mv)
4.4. On the circulatory system, what are the correct statements? PHYSIOLOGY_advanced (OJO) Pacemaker cells of the heart are neurons with a stable resting membrane potential. Pacemaker cells of the sinus node, located at the left atrium, determine the heart beat frequency. Cardiac output is a function of the heart beat frequency and the stroke volume. The Frank-Starling mechanism allows coupling of the venous return with the stroke volume. Within each capillary bed there is a net loss of liquid to the extracellular space; this imbalance depends on the hydrostatic pressure and the colloid osmotic pressure gradients.
10. If given a diagram of the heart, such as the one below, be able to identify each of the following parts of the conduction system: • sinoatrial (SA) node • • . spread of SA through the 2 atria atrioventricular (AV) node ● • • • 11. Trace the flow of impulses through the conduction system (step by step) and include at what points the following happen: 2 atria contract together AV node delay occurs AV bundle (=bundle of His) bundle branches Purkinje fibers Focus F
40- In the brain the frontal lobe has Oa. Voluntary motor activity Ob. Speaking Oc. Reasoning Od. Problem solving Oe. All of the above
1. What are some examples of arrhythmias that can be seen on a rhythm strip? 2. What additional information do we get from a 12-lead that is not available on a simple rhythm strip? 3. What are the three types of acute coronary syndrome
The short horizontal line between the P wave and the QRS complex indicates that a-depolarization is moving slowly through the AV Node b-the atria are done contracting c-the ventricles are depolarizing d-the ventricles are contracting and ejecting blood
In the given table, three of the anatomical and physiological terms are similar or related; one does not belong with the other three. Choose the term that does NOT belong in each of the following groups. A B C D 1 Pulmonary Trunk Vena Cava Right Side of the Heart Left Side of the Heart 2 QRS Wave T Wave P Wave Electrical Activity of the Ventricles 3 AV Valves Closed AV Valves Opened Ventricular Systole Semilunar Valves Open 4 Tricuspid Valve Mitral Valve Bicuspid Valve Left AV Valve 5 Pulmonary Valve Umbilical Artery Pulmonary Vein Superior Vena Cava
Leaky Na+ channels in the cells of the SA Node do which of the following? a-allow a slow repolarization which causes the delay in the AV Node b-allow a slow depolarization which causes the atria to contract for a longer time and fill the ventricles more completely c-allow a slow repolarization which brings the membrane potential back to a resting state d-allow a slow depolarization that eventually reaches the threshold for voltage-gated Ca2+ channels