All valves are closed, ventricular pressure decreases. Blood flows passively through the atria and AV valves. Left atrium- Right atrium- Left ventricle- Right ventricle-

Q: The right and left atria of the heart look alike and perform similar functional demands. The right…

A: Heart pumps blood to the whole body parts through a network with the help of arteries and veins. It…

Q: Which of the following is incorrect? Group of answer choices The walls of the cappillaries are…

A: Blood is a liquid comprising of plasma, red blood cells, white blood cells, and platelets which is…

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: Which of the following statements is correct? Group of answer choices Veins carry blood away from…

A: Veins  Veins are blood vessels that carry blood towards the heart. Stenotic heart valve Valve that…

Q: Which of the following occurs during ventricular diastole? a-The ventricles contract to force blood…

A: During ventricular diastole, the following occur- b- The ventricles relax and refill with blood c-…

Q: Chordae tendineae: Group of answer choices hold the AV valves in place. contract when the heart…

A: The papillary muscles of the heart are connected to the mitral and tricuspid valves cusps by thin…

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: True or false Blood pressure is a product of cardiac output and resistance. Blood pressure is…

A: Blood pressure is the pressure exerted by the flow of blood through the walls of the arteries. Blood…

Q: Starting at the Superior and Inferior Vena Cava follow the arrows in the image above and list the…

A: The heart is the major pumping organ in circulatory system. It pumps the blood across body parts.

Q: The period during which a heart chamber is contracting is called _______ . The period during which…

A: Heart helps in the circulation of blood in the human body. It works like a pump. It is situated…

Q: he left ventricle:   Question 21 options:   Has thinner muscular walls than does the right…

A: Our heart is a muscular organ that is like a fist in its size and is located just behind with…

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: Aortic valve closure AV valve opening Systolic pressure Isovolumetric relaxation Isovolumetric…

A: The stages involved in converting deoxygenated blood to oxygenated blood in the lungs and propelling…

Q: Using LEADER LINES or ARROWS, precisely label 15 relevant events of the cardiac cycle on the graph,…

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Q: visceral pericardium endocardium myocardium parietal pericardium pericardial cavity The heart is…

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

Q: Compared to the right ventricle, the left ventricle has all the following characteristics, except…

A: The human heart consists of four chambers, two atrium and two ventricles.  The blood flows into the…

Q: The heart is resting during Select one: ventricular systole. the ejection period. ventricular…

A: Cardiac cycle The cardiac events that occur from the beginning of one heart beat to beginning of…

Q: Which of the terms in the following pairs is correctly matched? Group of answer choices Heart…

A: Let us first understand the concept before matching A. Systole occurs when the heart contracts to…

Q: Which of the following is/are true for the ejection phase of the cardiac cycle? Check all that…

A: For a single complete heartbeat, the pattern of the heart's contraction and relaxation is referred…

Q: Match the following parts of an ECG tracing to the events in the heart that happen at the same time.…

A: ECG stands for Electrocardiogram. It is a medical test that detects heart problems by measuring the…

Q: Which of the following statements are TRUE? Increasing ventricular pressure increases ventricular…

A: Blood vessels are the way that bring blood during your body. They shape a closed loop, like a…

Q: lar systole begins ventricular relaxation

A: Cardiac cycle : It is the sequence of events that occur from beginning of one heartbeat to the…

Q: Which of the following is the correct sequence of blood flow through pulmonary circulation? Group…

A: Introduction:  Blood circulation in our body is known as double circulation  since the blood flows…

Q: Which of the following are true of the pericardium? There is a small amount of fluid found deep to…

A: The circulatory system is a body system that helps in blood circulation to transfer oxygen,…

Q: Which chamber of the heart has to contract against the greatest afterload?     right ventricle…

A: Afterload is the pressure which heart has to overcome to open the aortic valve and eject the blood…

Q: hich of the following is true for the ejection phase of the cardiac cycle  select all that apply…

A: The ejection phase of the cardiac cycle begins when the intraventricular pressure exceeds the…

Q: A young couple that you are friends with gave birth to a new baby. They were told by their physician…

A: The circulatory system is one of the most essential systems in the body. The function of the…

Q: Put the flow of blood through the heart in the right order starting with vena cava. Vena cava…

A: The circulatory system is responsible for transportation of circulatory fluid (blood) to the entire…

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 correct sequence for flow of blood in the heart? o Superior vena cava → right ventricle…

A: The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps…

Q: left coronary artery great cardiac vein right coronary artery circumflex branch coronary sinus…

A: Introduction: The circulatory system comprises the central blood-pumping organ, the heart, and the…

Q: The first sound of a cardiac cycle occurs when the _____ and ______   (select them in alphabetical…

A: Introduction: The sequence of alterations in the flow and pressure in the cardiac chambers and the…

Q: The maximum amount of blood within the left ventricle just before the start of isovolumic…

A: The circulatory framework, likewise called the cardiovascular framework or the vascular framework,…

Q: Which of the following situations might indicate the need for an artificial pacemaker? Group of…

A: The human heart is a muscular organ that functions as the central and important component of the…

Q: When during the cardiac cycle do ventricles contain their maximal amount of blood? At the end of…

A: Cardiac cycle is referred to as the time period between the contraction of atria and the relaxation…

Q: Put the following events in the proper order for cardiac conduction. Group of answer choices:   SA…

A: The activity of the heart depends upon electrical impulses.

Q: During which phase of the cardiac cycle is the ST segment present on an EKG? Group of answer choices…

A: This question is about how the heart works and how it appears up on a heart monitoring test called…

Q: Which of the following describes normal blood flow through a capillary bed?     arterioles,…

A: Blood is a vital component of the human body that transports oxygen, nutrition, water, hormones, and…

Q: during the four phases of the cardiac cycle. Which valves open/close during these phases?…

A: Cardiac cycle is defined as the time period between the contraction of atria and relaxation of…

Q: The semilunar valves prevent blood from moving: Group of answer choices from the atria back into…

A: The heart is composed of four chambers that are- two atriums and two ventricles. Different valves…

Q: What is occurring during ventricular ejection ? The AV valves are closed and the semilunar valves…

A: Introduction: The human heart is divided broadly into four chambers as follows: The right atrium…

Q: How much blood passes from the left ventricle into the aorta during diastole?   A none; during…

A: Each cardiac cycle has a diastolic phase where the heart chamber is in a state of relaxation and…

Q: What is happening during the phase labeled with the arrow?

A: The above image represents the electrocardiogram or ECG. An ECG is the graphical recording of the…

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: Which structure(s) (if any) do NOT produce action potentials (APs)?   SA node   Atrial muscle…

A: An action potential is caused by the influx and ejection of ions within the cell. The action…

Q: Match the area where blood will flow within the heart during systole (1 point) If blood is in the…

A: INTRODUCTION Systole It is the period of contraction of ventricles. Diastole It is the period of…

Q: As we auscultate the heart it is imperative, we understand what part of the heart we are listening…

A: As we auscultate the heart, it is important to understand which part of the heart we are listening…

Q: What is the tissue type for the following structures of the heart Fibrous pericardium Serous…

A: The tissue is the group of cells, that have the same function and structure. Different organs…