The first heart sound represents which portion of thecardiac cycle?a. atrial systoleb. ventricular systolec. closing of the atrioventricular valvesd. closing of the semilunar valves

Q: The QRS-complex of the ECG is generated by the depolarization of the AV-Node & Ventricular…

A: Introduction :- The graphical recording of electrical excitation in the cardiac muscles of the heart…

Q: Match each function to the correct cardiac valve. Prevents backflow of blood into the left atrium.…

A: Heart pumps blood to the body. Heart of mammals and birds has four chambers, 2 atria and 2…

Q: The myocardium is supplied by its own arterial blood supply, called the coronary circulation.…

A: In humans, coronary circulation can be described as the phase of systemic circulation during which…

Q: a hypothetical disorder where a patient did not have an arterioventricular- bundle. As a result, the…

A: AV bundle also known as bundle of His. This is the only site where action potential can move from…

Q: Which of the following lists the valves in the order through which the blood flows from the vena…

A: The heart is the muscular organ of the body that participates in the circulation of the blood…

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

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

Q: The four-chambered heart is a single organ but is sometimes described as a “double pump” because it…

A: The cardiovascular system is composed of the heart, blood, and blood vessels. The heart pumps blood…

Q: The right coronary artery typically:

A: Blood vessels are one of the three key components (The other 2 being the heart and the blood) are…

Q: When the ventricular walls contract A.  the mitral valve opens, and the tricuspid valve closes. B.…

A: Introduction  Ventricles are the two lower chambers of the heart, located below the atria. The heart…

Q: The “lubb” sound (first heart sound) is caused by thea. closing of the AV valves.b. closing of the…

A: The mechanical activities involved in the heart during cardiac cycle produce some sounds called…

Q: Which condition would cause a diastolic murmur?   A regurgitation of blood through an incompetent…

A: Diastolic murmur refers to the sound that occurs for some period during diastole. The diastolic…

Q: The second heart sound is caused by

A: Answer:  The Lub - Dup sound produced by the heart is basically the closing of the heart valves.

Q: Give a term to describe the statement. All valves are closed and the volume of blood remains…

A: Cardiac cycle is the process of contraction and relaxation of cardiac muscle to pump the blood in…

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: 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: In an EKG, what does the QRS wave indicate? electrical signal over the ventricles…

A: Introduction: ECG or EKG stands for electrocardiograph. It is referred to as the graphical…

Q: During the production of the waveform of the EKG indicated by the arrow, blood would pass through…

A:

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: 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: Determine whether the statement is either true or false. To clearly hear the heart sound of the…

A: Heart sounds are heard at specific locations. There are four valves where heart sounds can be heard-…

Q: A person had a heart attack involving a large part of the ventricular heart muscle. Which of the…

A: The heart needs blood supply to meet it nutrition and oxygen supply which is fulfilled by two…

Q: In which septum is it normal to find openings in the adult heart? Group of answer choices…

A: The functioning of the human body is very complex. There are different body structures are present…

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: Which process is being illustrated in the diagram (see picture)? Semilunar valves closed…

A: In this question asked about the cardiac cycle.  Cardiac cycle is event in the heart contractions.…

Q: The coronary sinus can be found on the posterior aspect of the of the heart. O right atrium right…

A: Introduction: In the most mammals, the heart is a muscular organ that pumps blood into the…

Q: Which of the following is incorrect regarding HFrEF: A it is also referred to as systolic heart…

A: Certainly! Heart Failure with Reduced Ejection Fraction (HFrEF) is a type of heart failure…

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…

Q: The atrioventricular valve on the same side of the heart as the origin of the aorta is the _____…

A: ATRIOVENTRICULAR VALVE It is the valve present between atrium and ventricle. It allows the flow of…

Q: The second heart sound is heard as the ECG records the end of the ______.   A P wave.   B P-R…

A: Electrocardiograms also called ECGs or EKGs is a simple diagnostic machine that checks the…

Q: The intrinsic heart rate is established by O Sympathetic innervation of the SA node O Autorhythmic…

A: Answer: Intrinsic heart rate is defined as the rate at which heart beats when all cardiac neural and…

Q: Pressure in the aorta is at its lowesta. at the time of the first heart sound.b. at the time of the…

A: The lowest pressure condition in the aorta is defined as diastolic pressure. Diastolic pressure…

Q: During the transmission of action potentials through the conductingsystem of the heart, there is a…

A: An action potential can be outlined as the phenomenon in which there occurs a rapid increase in the…

Q: Which fiber system is the first to depolarize in a cardiac cycle? Group of answer choices AV node…

A: Question - Which fiber system is the first to depolarize in a cardiac cycle? Group of answer choices…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.