Answered: The ECG records the electrical…

The ECG records the electrical stimulation of cardiac muscle by the conduction system and not the contraction of the muscle itself.? True or False ?

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

See similar textbooks

Related questions

Q: 11.

A: We know Heart sounds are generated by the flow of blood in and out of the heart chambers. These…

Q: 12. List the three layers of the heart wall and their histological difference.thanks

A: We can say that The heart wall consists of cardiac muscle tissue, connective tissue, and…

Q: 12. A true statement concerning conduction in first-degree AV block is that! G it results from…

A: An electrocardiogram can be defined as the test, which is used to measure the electrical activity of…

Q: DATA ANALYSIS 1. What electrical and mechanical events correlate to the P wave? The QRS complex? The…

A: Detailed explanationQuestion 1The P wave is the electrical signal that causes the atrium to…

Q: Leaky Na+ channels in the cells of the SA Node do which of the following? a-allow a slow…

A: d-allow a slow depolarization that eventually reaches the threshold for voltage-gated Ca2+ channels.

Q: The endocardium of the heart is composed of THREE layers. Describe their structure and also explain…

A: The main organ of the circulatory system is the heart. It has four-chamber that is responsible for…

Q: How can first aid CPR and defibrillator rescue heart function?

A: Electrical signal starts in a group of cells called sinoatrial node(SA). SA node called the…

Q: 6. What is the difference between the PR interval and the QT interval in electrocardiography?

A: Electrocardiography (ECG or EKG) is a medical test that measures the electrical activity of the…

Q: 8.Which heart chamber has the thickest myocardium? Read and analyze the question and choices…

A: A multi-chamberd muscular organ that pumps blood throughout the body in a rhythmic process is known…

Q: The ECG records the electrical stimulation of cardiac muscle by the conduction system and not the…

A: Electrocardiogram (ECG) is used to measure the changes in the electrocardiograph. One cardiac cycle…

Q: List 6 things (from your PowerPoint) that result in an increase in heart rate.

A: The six things that can increase heart rate in a human being can be, 1) Stress : two much stress may…

Q: The P wave on an electrocardiogram (ECG) represents the depolarization of cells in the: O…

A: Heart is an organ present in the circulatory system. It is responsible for pumping of blood to the…

Q: Which of the following will have a negative chronotropic effect on the heart rate?…

A: The cardiac cycle refers to the sequence of events which takes place during the completion of one…

Q: 22. State the channels involved during an action potential in cardiac CONTRACTILE cells and then…

A: In order to understand how an action potential is generated in cardiac contractile cells, it is…

Q: 6. Put the following events of the conduction system in the proper order (#1-9). .1. sinoatrial node…

A: The heart's independent but coordinated activity is determined by the existence of gap junctions and…

Q: Observing the Effect of Various Factors ebayo oelbedo er 16 o on Blood Pressure and Heart Rate 15.…

A: When the diameter of the arterioles increases, it causes a decrease in blood pressure. This is…

Q: 13.The lumen of a vein is larger than the lumen of an artery of the same size. True or False?

A: We can say that The cardiovascular and or the circulatory system is made up of the heart and blood…

Q: Explain what would happen to the ECG if the AV node were very slow at transmitting the action…

A: An essential part of the heart's electrical conduction system is the AV (atrioventricular) node. It…

Q: The sympathetic nervous system has a positive chronotropic effect on the heart. False True

A: Introduction:- The nervous system is a major regulatory, regulatory, and communication system in the…

Q: 36. Which heart chambers are used as route between heart and the entire body? Group of answer…

A: Sol: There are four chambers in the heart of the humans which are 1. Right atrium, 2. Left atrium,…

Q: 13. Rate: bpm P-P atrial rhythm regular? R-R ventricular rhythm regular? Rhythm: اساس اسرالي السراي…

A: A cardiac cycle is defined as a series of events that occur during one complete heartbeat. It…

Q: Let's review the electrical events that occur during a heartbeat. Match each phase of the ECG in the…

A: A. The atria depolarize ( P wave)B. The ventricles repolarize (T wave)C. (Diastolic interval; the…

Q: Blood flow velocity is slowest in which vessels: - aorta - large arteries - large veins -…

A: Blood flow velocity is defined as the rate at which the blood flows through the blood vessels. This…

Q: 3. The cause of vasoconstriction is smooth muscle. Real or false

A: Cells are the basic structural and functional unit of all known organisms which help in the process…

Q: 5. The number 70 is the ____ when one's blood pressure is measured as 110/70.? a. systolic pressure…

A: Blood pressure is considered an important parameter to judge one's health condition along with the…

Q: rate for the tracing. What is the heart rate? Is the heart rate normal or

A: ECG is electrocardiography, the process of recording the heart's electrical activity. In an ECG,…

Q: 6. The ECG records the electrical stimulation of cardiac muscle by the conduction system and not the…

A: The thick middle layer of the heart is the myocardium (cardiac muscle). Along with skeletal and…

Q: Which of the following is not an effect of contraction of the heart? increase volume in aorta…

A: The cardiac cycle is the time period starting from the atrial contraction and ending with the…

Q: 2. Calculate the heart rate for the tracing. What is the heart rate? Is the heart rate normal or…

A: Heart rate The heart rate is one of the vital signs or the important indicator of health in the…

Q: 9*

A: We know that Electrocardiogram (ECG) is used to measure the changes in the electrocardiograph. One…

Q: 21. Aortic diastolic pressure is normally around 0mmhg. True

A: Aortic diastolic pressure: When pressure is exerted by arteries it is the aortic diastolic…

Q: 3.Define systolic and diastolic phases of the heart.

A: * Every single beat of heart of heart is called cardiac cycle. * And every cardiac cycle will have…

Q: a. If a patient has a systolic pressure of 100 mm Hg and a diastolic pressure of 70 mm Hg, what is…

A: Heart is a chief pumping structure that is involved in sending oxygen rich blood to all parts of the…

Q: 25. Blood Volume affects blood pressure because it directly increases: A.Total Peripheral…

A: The homeostatic mechanisms regulate cardiovascular activity to ensure adequate blood flow,…

Q: 2. Describe the differences in generating action potentials between the cardiac electrical cells and…

A: The term "pacemaker cells" refers to the cells that set the rhythm of the heartbeat. They are…

Q: %3D VL VF This ECG was recorded from a 9-year-old girl who was asymptomatic but who had been found…

A: ECG or electrocardiogram is the common test for determining the heart rhythm and its electrical…

Q: What are the differences between the atrioventricular and semilunar valves? Give an example of a…

A: We know that the Heart is a muscle-like pumping structure whose main job is to send oxygen-rich…

Q: Which wave on the electrocardiogram (ECG) represents ventricular depolarization? O P wave QRS wave O…

A: A simple test that can be used to check your heart's rhythm and electrical activity is called as the…

Q: 1. What are some examples of arrhythmias that can be seen on a rhythm strip? 2. What additional…

A: Arrhythmia also called as irregular heartbeats. This occurs when the heart beats too fast or slow.…

Q: True or false. The QRS complex correlates with ventricular depolarization. 46. True or false. The…

A: The QRS complex represents the electrical impulse as it spreads through the ventricles.

Q: Each contraction of cardiac muscle is caused by a signal from the CNS O False O True

A: The circulation of blood (containing nutrients and oxygen) throughout the body is governed by the…

Q: 5. Heart (pulse) rate: Listen to your heart with the stethoscope, and count the number of beats for…

A: Heart rate is the number of times your heart beats in 1 minute.

Q: 1. You should be able to distinguish two heart sounds. The first sound is when the ventricle begins…

A: “They are not subparts of a question. Since you have asked multiple questions, we will solve the…

Question

4. The ECG records the electrical stimulation of cardiac muscle by the conduction system and not the contraction of the muscle itself.?

True or False ?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

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).
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
6. Put the following events of the conduction system in the proper order (#1-9). _1_ sinoatrial node atrioventricular node right and left bundle branches contraction of atria ventricular depolarization atrioventricular bundle Purkinje fibers 9 contraction of ventricles depolarization of atria
8. In a standard ECG, what do the following represent: а. Р- b. QRS= C. T= d. U= e. The # of QRS complexes in a time period:
7. This is not and will not be graded
4. On the base of ECG analyses define what structure is the pacemaker of heart. Explain why you think so. سلسلية سليل بليد
4. Define the following terms: Electrocardiograph Electrocardiogram (=EKG = ECG) Bradycardia Tachycardia Auscultation Stethocope Fast heart rate Slow heart rate
6. The lumen of a vein is larger than the lumen of an artery of the same size. True or False ?!
3. During phase 1 of the cardiac contractile cell: electrochemical K+ efflux is offset by electrochemical Na+ influx O chemical gradient K+ influx is nearly offset by electrostatic K+ efflux O there is a net electrochemical K+ efflux O chemical gradient K+ efflux is nearly offset by electrostatic K+ influx
22. Ventricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction? A.the Na+ current (depol.) B.the Ca++ current which causes the plateau (trigger Ca++) C.the K+ current D.a decreased Central Venous Pressure 23. Normally, Systole takes up about 80% of the Cardiac Cycle. A. true B. false 24.Which of the following is not an affect of circulating Angiostensin II (AII)? A.thirst B.selective vasodilation C.increased peripheral vascular tone & resistance D.the release of Aldosterone from the adrenal cortex 25. Blood Volume affects blood pressure because it directly increases: A.Total Peripheral Resistance B.Stroke Volume C.End Systolic Volume D.Central Venous Pressure 26. Atrial Naturetic Factor is released to adjust blood pressure. Which organ releases this hormone? A.the heart B.the kidneys C.the adrenal cortex
3 describe why arteries that are no longer stretchy can cause the heart muscle to wear out and fail *