54. Atropine Sulfate: a. Decreases heart rate by depressing the SA note and AV node activity b. Increases heart rate and sinus node automaticity; improves AV conduction Decreases heart rate by altering impulses through conduction pathways; slows conduction; prolongs effective refractory period с. 55. Epinephrine Hydrochloride: a. Decreases heart rate by slowing conduction of the AV node and by lengthening the refractory periods. Decreases blood pressure by dilating coronary arteries b. Reduces ventricular dysrhythmias that may follow and MI c. Increases heart rate and force of cardiac contractions; increases coronary and cerebral blood flow.

Q: 25. Compare the contraction of a single cardiac muscle fiber to a skeletal muscle fiber in terms of…

A: Muscle is one of the tissue types in the body that brings about contraction and relaxation. Muscle…

Q: Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse…

A: Cardiac muscles or the heart muscles are involuntary in nature. The rhythmic contraction and…

Q: Absent "P" waves in a junctional arrhythmia indicate: O A. Retrograde atrial deplorization occurs at…

A: In a normal sinus rhythm the electrical impulse startsin the sinoatrial node. which formulates P…

Q: A 43-year-old woman has congestive heart failure after a myocardial infarction. Before the…

A: Cardiac output (CO):- It is the amount of blood that is pumped by the heart (ventricles) per unit of…

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: 14.The electrical stimulation of cardiac muscle via the conduction system, not the muscular…

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

Q: Which neurotransmitter/target receptor combinations would you expect to find in these areas of the…

A: Neurotransmitter and target receptor combinations in the areas of the heart are as follows: SA…

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: 45. Which of the following is/are true concerning the opening and closing of thecardiac valves?   A.…

A: The valves of the heart maintain undirectional flow of the blood and prevent its regurgitation in…

Q: 59. A 20-year-old woman is participating in a study of skeletal muscle blood flow during dynamic…

A: The answe will be  D) immediately after S2

Q: why is it important to assess a patient's ABC when they are experiencing a heart attack?

A: The objective of this question is to understand the importance of assessing a patient's Airway,…

Q: 1. is the rhythm regular or irregular 2. determine the heart rate 3. do you have p waves before…

A: EKG is also called the elecro cardio gram and it records the hearts electrical activity that takes…

Q: Autorhythmic cells in the SA node intrinsically fire at a rate of 90 action potentials per minute.…

A: The heart is a major muscular organ of the cardiovascular system that is responsible for pumping the…

Q: ich of the following is an accurate descriptione d the subsequent (second) P wave (second cardi

A: Measuring rate and regularity of heartbeat, size, and shape by electrocardiograph, detect tiny…

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: 10. If given a diagram of the heart, such as the one below, be able to identify each of the…

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

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: Why is the cardiac action potential propagated more slowly in an AV node cell then in an atrial or…

A: Impulse conduction occurs by the depolarization that results into action potential. It is initiated…

Q: Explain the pressure changes which occur during the cardiac cycle and their relationship to the flow…

A: Cardiac cycle - The cardiac cycle is the performance of the human heart from the beginning of one…

Q: 17. wwwww Rate: Rhythm: P-P atrial rhythm regular? R-R ventricular rhythm regular? Conduction: All…

A: Answer:- 17) Rate - >120 beats/min P-P atrial rhythm regular - NO R-R ventricular rhythm - NO…

Q: 1. Describe the steps in the actión nembrane potential, ion movements and the state of ion channels…

A: Cardiac muscle cells are specialised auto rhythmic cells which can initiate action potential without…

Q: Cosider the various components of the arterial baroreceptor reflex and predict whether the following…

A: Arterial pressure can be outlined as the blood pressure of circulating blood that occurs against the…

Q: 4. Compare the action potentials of contractile cardiac muscle, autorhythmic cardiac muscle and…

A: Introduction:- The circulatory system is sometimes referred to as the blood-vascular system or…

Q: What is the Frank-Starling law of the heart' What is its significance?

A: Venous return is defined as the amount of blood which is formed by the heart every minute and is…

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: Write PICOT questions for reducing readmission rate with heart failure patients?

A: Heart failure is a medical condition in which the heart is unable to pump blood effectively to meet…

Q: 1. You are a lead engineer in a cGMP facility that develops and delivers tissue engineering…

A: Globally, myocardial infarction (MI) is one of the leading causes of death. Loss of cardiomyocytes,…

Q: 1. Identify and color the following in the ECG image below: three P waves three QRS complexes three…

A: The ECG is an electrical representation of the heart's activity. It usually has a characteristic…

Q: potential

A: Introduction:-The conductive cell's with in the heart established the heart rates and transmits it…

Q: is the rhythm regular or irregular 2. determine the heart rate 3. do you have p waves before every…

A: ECG interpretation is an important aspect that nurses need to be acquainted to in all specialities…

Q: 02

A: We can say that Cardiac output is also referred to as minute volume. It is the amount of blood…

Q: What is occurring during isovolumetric relaxation during the cardiac cycle? O The ventricles are…

A: Cardiac cycle is defined as the sequence of coordinated events taking place in the heart during each…

Q: Flecainide and propafenone are in Vaughan-Williams (antiarrhythmic) Class IC. What is the clinically…

A: Antiarrhythmics are drugs/medications that are prescribed to patients who are suffering from…

Q: 9. What are the phases of the cardiac cycle and what occurs during each?

A: The cardiac cycle represents the functioning of the human heart from the resolution of one heart…

Q: Explain the physiological mechanisms that drive the changes in heart rate between conditions a.…

A: Physiological mechanisms that drive the changes in heart rate in various physical states is…

Q: 54. Trace blood flow through the chambers and vessels of the pigeons heart. Use red for oxygenated…

A: We know that The circulation of the birds is effective enough to meet the amount of oxygen needed…

Q: What best describes the Frank-Starling law? O The Frank-Starling law states that the greater the…

A: According to the Frank-Starling law, the force or tension created in a muscle fiber is proportional…

Q: MuM ku u hu hh hh l IMMER C L

A: Electrocardiogram (ECG) is a medical test that records the electrical activity of the heart. It is a…

Q: There are a number of drugs that are prescribed to patients with heart failure in an effort to…

A: Inotropic agents are those that modify the force of contraction of the heart. They can be of two…

Q: 0. Early defibrillation is critical for individuals with sudden cardiac arrest for the following…

A: Defibrillation : It involves delivering a high intensity electrical charge inorder to depolarize the…

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

A: We know that An electrocardiogram can be defined as the test, which is used to measure the…

Q: . On the circulatory system, what are the correct statements? PHYSIOLOGY_advanced (OJO)…

A: The circulatory system is an organ system that is made up of the heart and blood vessels (arteries,…

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

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

Q: Elaborate about the AV node why and how it decreases the action potential

A: Introduction:-  Atrioventricular node is a structure present in the heart. If functions to delays…

Q: ਲਿਆ ਹ LLE

A: Cardiac rhythm interpretation consists of a 5 step approach. This includes analysis of the following…

Q: Discuss TWO (2) body surface electrodes that can record the bioelectric potential of the heart…

A: Surface electrodes estimates the potential that is available from the outer surface of the skin and…

Q: Even though it is trivial that Beta Blockers might have negative inotropic effect on the heart, but…

A: Beta-blockers act on the Beta 1 receptors which are located in the heart and it slows down the…