Describe what is happen in each phase of the cardiac cycle below. SA node AV node R the RO as R h 85 OS G R O Depolarization D (6) Repolarization Q R S S R D SI

Q: write the name of each part of the heart next to the number and mark the blood flow with red arrows…

A: The human heart pumps blood during the frame thru the vessels of the circulatory system, providing…

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: How is the heart beat initiated? What is the function of autorhythmic cells? Explain: What effect do…

A: Heart- It is a hollow organ situated in the middle region of the chest. The heart is responsible for…

Q: Which ion movement causes depolarization in the contractile cells of the heart? Ca++ leaving the…

A: The human heart is a muscular blood pumping organ made up of electrically excitable cardiac muscle…

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A: Thus , the ECG given is of condition Atrial fibrillation. Atrial fibrillation (AFib) is a common…

Q: Which one of the following is a matching pair?  A Pulsation of the radial artery - values in…

A: Heart is the muscular organ in most animals that is involved in pumping blood through blood vessels.…

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: The sinoatrial and atrioventricular nodes of the heart are affected by. O only somatic motor nerves…

A: The human heart is an organ that pumps blood through the circulatory system's veins, giving oxygen…

Q: Speak about SA nodes ana AV nodes in the heart

A: The heart receives the oxygenated blood from the lungs which are then pumped by the chambers of the…

Q: An athlete suddenly develops hypoglycemia. You are aware that when blood glucose levels fall, O…

A: To determine: The answer for two questions from the following options. What happens when blood…

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 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: An embolus lodged in the circumflex artery could impair blood flow to what portion of the heart? O…

A: The cardiovascular system is also known as the circulatory system allows the blood flow throughout…

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: Discuss how the change in cardiac cycle length with exercise affects heart muscle perfusion and time…

A: Just as exercise strengthens other muscles in your body, it helps your heart muscle become more…

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: 8. The closure of the tricuspid valve separates which two events in the cyclic changes of the left…

A: A single cardiac cycle includes all the events associated with one heartbeat. Thus, a cardiac cycle…

Q: Describe the parts of the electrocardiogram (ECG) and explain how these electrical events are…

A: An electrocardiogram is a device that can help in recording the electrical signals that are produced…

Q: In 1st degree heart block there is Progressively prolonged PRI followed by QRS drop O PRI > 0.20 in…

A: Heart block is a medical emergency where the heart beats at a slower or irregular rate. A…

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

Q: Considering the left ventricle, why does the ventricular volume have to decrease during ventricular…

A: Protruding of the mitral valve into the left atrium during isovolumetric contraction results in a…

Q: What is the easiest way to change blood flow?     change vascular resistance     change blood…

A: Blood flow in the heart has the following steps- Body organs and tissues---- Inferior/superior vena…

Q: The picture above shows what on the ECG?

A: The picture above shown is ECG of Sinus rythm.

Q: Which of these accounts for the similarity between the P wave duration and the QRS complex duration…

A: This question dives into the complexities of cardiac physiology, particularly centering on the…

Q: In a cardiac contractile cell what is the mechanism involved in the change in membrane potential?…

A: The cardiac contractile cell undergoes various changes in order to perform several activities and…

Q: Mean arterial pressure is likely to decrease when Oblood viscosity decreases heart rate increases…

A: Mean arterial pressure (MAP) is one of the key indicators of cardiovascular health. It is a measure…

Q: Which of the following are pacemakers of the heart? Choose all that apply. AV node SA node Cardiac…

A: Pacemakers- Electrical impulses generated by the heart muscle that causes the heart to beat…

Q: . In a normal individual, heart rate can be determined by the in an ECG.

A: ECG stands for Electrocardiogram.  It is a test which measures the electrical activity of heart.…

Q: the liquid viscosity is density intendent. True O False during the diastolic of the cardiac cycle…

A: Introduction  When the membrane potential of a specific cell region rapidly rises and falls, it is…

Q: Create a flow diagram for this cardiovascular system that has these elements in correct order • Vena…

A: Introduction  The circulatory system (cardiovascular system) transports oxygen-rich blood from the…

Q: In the heart, lub - dub refer to, in order, the O closing of all valves simultaneously O closing of…

A: The cardiac cycle explains the cardiac event that occurs during the contraction and relaxation of…

Q: The role of calcium currents in cardiac contractile cells is to .  The role of calcium currents in…

A: A neuromuscular junction is a biochemical synapse between muscle fiber and a motor neuron. It…

Q: During which phase of the cardiac cycle do the ventricles begin to contract while the semilunar…

A: Right semi lunar valve is present between the right ventricle and the Pulmonary artery . it pumps…

Q: Can you please explain how to use this equation to get Flow(ml/min) Blood flow = π  ΔP r4 / ​8Lv

A: The network of capillaries supplies oxygenated blood to the various tissues. The blood rich in…

Q: The marks a spot of dead myocardial cells. How does this change the depolarization and muscle…

A: Myocardial cells myocardial cells are located in the heart forming a branched network in the heart,…

Q: The first phase of the cardiac cycle is This is when a lot of blood is in the atria, which causes…

A: The cardiac cycle reffers the sequence of events which takes place during completionon of one…

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 is the cardiac rhythm? II wwwwwwwwwwww Ventricular tachycardia Sinus tachycardia…

A: Cardiac rhythms are the patterns of electrical activity inside the heart. The normal heartbeat,…

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: During diastole the blood pressure in the left ventricle is A lower than the pressure in the left…

A: We can say that The heart is a highly muscularized, involuntary organ of the body. It has four…

Q: In this transverse section B shows a vertebra. What body directional term would you use when…

A: In anatomical study the relative positions of different organs are very important. We also need to…

Q: during isometric ventricular contraction: a. the entry and exit valves of the ventricle are closedb.…

A: The question is asking about the physiological changes that occur in the heart during isometric…

Q: An action potential reaches a cardiac contractile cell, which fires, but then does not propagate the…

A: The heart muscle (also called the heart muscle or myocardium) is one of three types of spinal muscle…