What is the effort of different types/intensity of exerise on heart rate

Q: A patient has tachycardia. Would you recommend a drug that prolongsor shortens the plateau of…

A: Tachycardia is a condition that makes our heart beat more than 100 times per minute. There are three…

Q: Generates electrical impulse that sets rhythm to the heart; the primary pacemaker of the heart. SA…

A: Heart has conductive system which generates and transfer the electrical impulses.

Q: Cardiac output increases during exercise due to an increase in both heart rate and stroke volume.…

A: The cardiovascular system has an important role in regulating homeostasis in the human body by…

Q: Trace the biochemical electrical pathways that result in cardiac conduction

A: The collection of specialized cardiac myocytes located in the heart walls that send electrical…

Q: +20 A Membrane -20 potential (mV) -40 Threshold -60 -80 0.8 1.6 Time (s) AV node threshold…

A: The SA node and AV node in the heart are responsible for generating electrical impulses that are…

Q: After exercising many of you saw an INCREASE in the amplitude of the pulse transducer suggesting…

A: The sympathetic nervous system is stimulated by exercise and various changes take place in body as a…

Q: The Effects of Lifestyle, Sex & Genetics on Blood Pressure Many things might affect heart rate,…

A: The pressure exerted by the circulating blood against the walls of blood vessels is known as blood…

Q: Some diabetics develop abnormal ECGS before they show obvious symptoms of heart disease. For…

A: Electrocardiogram(ECG or EKG) a painless diagnostic test is performed to measure the electric…

Q: During strenuous exercise, blood flow will redistribute primarily to the       Liver

A: When a person starts  strenous exercising, the cardiovascular system undergoes few changes to meet…

Q: Explain your results using your knowledge of the cardiac cycle and of how the heart is regulated by…

A: ECG - it is graphical representation of activities of heart with help of chest leads that are placed…

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: In ECG, P and QRS waves represent what types of heart electrophysiological activity? Draw and speak.…

A: The circulatory patterns are of two types - open or closed. The open circulatory system is present…

Q: During the Cardiac Contraction cycCle, EARLY ventricular systole is characterised by

A: ventricular systole- It is a phase of cardiac cycle in this the left and right ventricles contract…

Q: The conductance of which ion results in phase 2 characteristics in a ventricular myocyte action…

A: The non-pacemaker cardiac action potentials include the atrial and ventricular myocytes and Purkinje…

Q: . ECG depicts the depolarization and repolarization processes of a cardiac cycle. In the ECG of a…

A: The electrocardiogram (ECG) is the total amount of the action potentials of millions of…

Q: Which statement about activation of heart muscle cells is TRUE?   A when a person is resting only a…

A: The electrical conduction system of the heart transmits signals generated usually by the sinoatrial…

Q: Examine the graphs of Heart Rate, Systolic BP, and Diastolic BP and describe how they change with…

A: During the onset of exercise, the graphs of Heart Rate (HR), Systolic Blood Pressure (SBP), and…

Q: In the normal EKG the QRS wave correlates with electricity present in which structure?…

A: To check for various cardiac diseases, an electrocardiogram (ECG or EKG) measures the electrical…

Q: Explain two reasons why the heart is referred to as a double pump.

A: The circulatory system consists of the heart, the blood vessels and the blood. The heart is the…

Q: Based on the concentration gradient of sodium, potassium, and calcium in cardiac myocytes, which of…

A: In a cell, the plasma membrane separates the internal environment (cytoplasm) from the external…

Q: During an electrocardiogram, the T-wave represents atrial depolarization. QRS complex represents…

A: Electrocardiogram (ECG) is a test that helps to assess the electrical activity of the heart. It…

Q: MEASUREMENT OF PULSE RATE Give the pulse rate in the following conditions, explain the changes of…

A: The heart beats constantly in order to keep blood flowing throughout the body. Its rate varies…

Q: The pressure in the veins sufficiently high to drive the flow of blood into the heart is callec O…

A: The heart is a fist-sized organ that pumps the blood throughout the body. It is the primary organ of…

Q: Briefly describe the events of excitation-contraction coupling in cardiac muscle cells.

A: Cardiac muscles are also called myocardium, which is a type of muscle in the body that is…

Q: Which of these is an example of autoregulation? O The increased force response of the heart…

A: Autoregulation is a process that is well equipped in various biological systems within the body. It…

Q: Contractile cardiac myocytes use calcium influx across the plasma membrane for all of the following…

A: "Since you have posted multiple question we will answer the first question for you. If you want…

Q: Should Jhon expect any variation to the normal values of the heart rate knowing that the patient in…

A: Flight or fight mechanism is our body's automatic mechanism which prepares our body to accept or…

Q: Which of these lists t n the correct order? O Sinoatrial node, Atrioventricular node, Purk…

A: There is presence of specialized muscle cells in the walls of the heart. These cells have the…

Q: What are the uses of cardiac troponins?

A: Troponins are a group of protein molecules that are found in skeletal and cardiac muscles. The…

Q: Give a detailed mechanism of action of a name drug or agonist that results in positive inotropic…

A: Positive inotropy refers to the increase in the force of contraction of the cardiac muscle. One of…

Q: (a) What is the stroke volume for the control patient? 100 mL (b) A healthy heart rate (HR) is…

A: Cardiovascular system is mainly consist of heart, bloor vessels  and blood. It transport nutrients…

Q: Discuss how the SA and AV nodes control the contractionsof the heart muscle, as well as how these…

A: A network of specialized muscle cells is present in the walls of the heart. These muscle cells are…

Q: effect of exercise on cardiopulmonary function

A: The effects of exercise on cardiopulmonary function: Exercise places a far greater strain on the…

Q: Fill in the chart Drug Classification Effect on Heart Rate Epinephrine     Acetylcholine…

A: Cardiac drugs are the drugs that used to improve  or treat the disorders associated  with…

Q: 29. 30. State the significance of the longer action potential in a cardiac CONTRACTILE cell. State…

A: The myocardial contractile cells comprise the mass amount of the cells in the atria and ventricles.…

Q: In the absence of neural and hormonal influences the SA node generates action potentials at a…

A: The SA node's primary role is to serve as the heart's natural pacemaker. It starts an action…

Q: The pulse rate will on standing and the pulse rate standing after 5 minutes will to normal.…

A: Pulse rate is commonly called heart rate, and it refers to the number of contractions caused by the…

Q: Which of these conditions occurs in the repolarization phase of an action potential in pacemaker…

A: When the change in the membrane potential occurs due to voltage decrease, then it is called…

Q: The pacemaker potential describes a slow depolarization of the membrane from -60 mV to -40 mV to…

A: A small structure known as the sinoatrial node (SAN) is located in the right atrium, close to the…

Q: list in sequence the components of the elctrical conducting system of the human heart

A: A pump of muscle tissue consists of a heart and a supply of energy and oxygen is required for the…

Q: Duration of one RR interval (time of one heartbeat) Heart Rate (Calculate using the RR interval)…

A: Standard speed that can be seen on ECG:- 1 SMALL square (1mm) = 0.04 sec (40ms) 5 SMALL squares…

Q: During the period from the end of the S-wave until the beginning of the T-wave the entire heart is…

A: An electrocardiogram is a device that measures the electrical activity of the heart represented by…

Q: All of the followings are correct about the myogenic pacemaker except, --------------------- They…

A: The cardiovascular system is a principal organ system of the human body concerned with the transport…

Q: Define the terms depolarization and repolarization with respect to heart’s activity.

A: Cardiovascular action is a short-term change in voltage i.e. the power of the membrane throughout…

Q: Why is the rate of cardiac muscle relaxation faster when a positive inotropic agent is present?

A: Inotropic agents refer to those substances that either increase or decrease the force of contraction…

Q: mean arterial pressure is a product of  heart rate and cardiac output none of the abouve cardiac…

A: Mean arterial pressure is that average arterial pressure which is present in one cardiac cycle. It…

Q: Explain why Purkinje fibers conduct action potentials morerapidly than other cardiac muscle cells

A: Purkinje fibers are components of the heart's advanced conduction system, which guarantees that an…

Q: In the nineteenth century, Poiseuille’s law was experimentally deduced byJ. L. M. Poiseuille, who…

A: There are few primary assumptions for the validity of Poiseuille’s Law. Whenever one assumption…