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 second heart sound ("dub") results from vibrations generated by the A. closing of the AV valves…

A: A normal heartbeat consists of two sounds- LUB and DUB. These sounds often occur as pairs in a…

Q: The atria contract duringa. the first heart sound.b. the second heart sound.c. the QRS complex.d.…

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: The circulatory route from aorta to the venae cavae is the __________ circuit.

A: The heart is the most important organ for the body and made up of several different types of tissues…

Q: The trabeculae carneae are located in the __________.   A epicardium   B ventricles   C atrium…

A: Step 1 The trabeculae carneae or columnae carneae are either rounded or irregular muscular columns…

Q: Structures on the anterior side Function/significance Anterior interventricular sulcus…

A: all the given stuctures are related to the anatomy of heart wich can be explain as follows-

Q: Given these events, the correct sequence of the cardiac cycle is: i. Atrial diastole ii. Atrial…

A: In the cardiac cycle, diastole means that the heart chamber is filled with blood received from the…

Q: All of the following are part of the cardiac conduction system except the: a. chordae tendineae b.…

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: The finest passages through which electrical signals pass before reaching the ventricular…

A: Introduction: The muscle of heart is composed of small cells through which electrical signals are…

Q: Which of the following is NOT a population of pacemaker cells in the heart? a. papillary muscles b.…

A: D) purkinje fibre system

Q: Looking at the wiggers diagram Which of the letters A-F would be the point when semilunar valves…

A: The stress exerted by pumping blood on the artery walls is called blood pressure. Blood pressure is…

Q: the amount of blood pumped by the ventricucles each is referred to as

A: The heart of a human being consists of 4 chambers with two on the right side and two on the left…

Q: The cardiac conduction system includes all of the following except:- a. the SA node. b. the AV node.…

A: Cardiac conduction system is made up of various muscles which send signals to the cardiac muscles…

Q: a. Ventricular diastole b. Throughout the cardiac cycle c. Between cardiac cycles  d. Ventricular…

A: Heart It is the main component of the circulatory system. It pumps the blood to various parts of the…

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 vein through which blood reaches the heart from the abdominopelvic viscera is the (a) superior…

A: The vein through which blood reaches the heart from the abdominopelvic viscera is the:

Q: Which valve separates the left atrium from the leftventricle?a. mitralb. tricuspidc. pulmonary d.…

A: The heart consists of 4 chambers the two upper chambers are atria and two lower chambers are…

Q: The T wave represents: a. Depolarization of the ventricles b. Repolarization of the atria c.…

A: ECG (Electrocardiogram) can be outlined as the graph which represents the electrical activity of the…

Q: Blood in the heart chambers is separated from the myocardium by a thin membrane called the _____.

A: The correct answer is Endocardium .

Q: The QRS wave of an ECG is produced by. a. depolarization of the atria. b. repolarization of the…

A: ECG or electrocardiogram is a diagram or graph of the electrical activity of heart that is produced…

Q: Path of Blood in Heart Ventricles pump blood to body or lungs Atria fill with blood from body or…

A: The blood vascular system or the circulatory system is the transport system of the body. The…

Q: Which of the following volumes should be the greatest? end-diastolic volume (EDV) stroke…

A: The cardiac cycle contains two phases, the systole, and the diastole. In the systole phase blood is…

Q: During what stage or stages is blood being pumped from the atria into the ventricles

A: The cardiac cycle completes in four different stages: They are filling phase, isovolumetric…

Q: Concerning ventricular filling, choose the CORRECT statement? O a. Begins during isovolumic…

A: 1)The left ventricle takes blood from the left atrium during diastole, which is then discharged into…

Q: The lining of the heart chambers is called the __________.   A endocardium   B myocardium   C…

A: The heart is the muscular organ that pumps blood throughout the body. It is made of cardiac muscle.…

Q: In a patient with _______ some of the oxygenated blood returning to the left atrium would be pumped…

A: The blood enters the heart's right atrium from the body, where it moves to the right ventricle and…

Q: The papillary musclesa. are attached to chordae tendineae.b. are found in the atria.c. contract to…

A: The papillary muscles keep valves from inverting. (a) The papillary muscles have chordae tendineae…

Q: The normal pacemaker of the heart is the ______.   A sinoatrial node   B left atrium   C…

A: Heart is an important organ that pumps blood. Heart is myogenic in nature meaning it is capable of…

Q: Which of the following cardiac tissues has the most rapid conduction velocity? A)The AV node. B)…

A: Purkinje fibre situated in both ventricle myocardium

Q: Which portion of the ECG corresponds torepolarization of the atria?a. P waveb. QRS complexc. T…

A: The cardiac action potential refers to a brief variation in the membrane potential through the cell…

Q: Predict the pressure changes that occur in the aorta, the left ventricle,and the left atrium after…

A: The heart is a smooth muscle organ that plays a major role in the circulation of blood. Human heart…

Q: In an ECG, which of the following represents the repolarization of the ventricles? Group of answer…

A: An electrocardiogram (ECG) is a test that measures the electrical activity of the heartbeat. The…

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: Which chamber initially receives blood from thesystemic circuit?a. left atriumb. left ventriclec.…

A: The heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic…

Q: Describe the different Heart sounds and what happens to each valve(s) during these heart sounds.

A: The circulatory system consists of three systems that work together; the heart (cardiovascular),…

Q: As blood in the great arteries ricochets back against the closed semilunar valves, the second heart…

A: The second  heart sound is caused by the closure of the aortic and pulmonary truck semilunar valves…

Q: Type of blood vessels taking impure blood from the head part to the heart are calle O a. Coronary…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Right and Left Ventricular pressures differ during: A. the entire cardiac cycle B. diastole C.…

A: The human heart is 4 chambered that is there are 2 auricle and 2 ventricle. The Diastole is the…

Q: During the cardiac cycle, when would you expect to hear the second heart sound? O a) After ejection…

A: The timeframe that starts with compression of the atria and closures with ventricular unwinding is…

Q: The heart’s internal pacemaker beats by: a. an internal implant that sends an electrical impulse…

A: The heart is a muscular organ in numerous animals, which siphons blood through the veins of 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: Which of the following vessels has the largest lumen and a thin tunica media?   A Veins   B…

A: Step 1 Blood in the body is carried by different vessels called blood vessels. There are three…

Q: (a) (b) The part of the illustration in the middle (b) shows O Pressure at which you would hear the…

A: This illustration shows the process of measuring arterial blood pressure using sphygmomanometer and…

Q: As blood in the ventricles surges back against the closed AV  valves, the first heart sound ("lubb")…

A: The heart is the hollow pumping organ of the body that is responsible for circulating the blood to…

Q: In an ECG, the wave representing atrial repolarization = P wave PR interval O QRS complex O T wave

A: An electrocardiogram is a diagnostic procedure that records the electrical signaling of the heart.…

Q: Which of the following term and definition pair is correctly matched? Group of answer choices…

A: The heart is a hollow muscular organ that is located behind the sternum and between the lungs. The…

Q: The heart's pacemaker is the O a. atrioventricular node O b. bicuspid node O c. sinoatrial node O d.…

A: A cardiac pacemaker is a medical device that sends electrical impulses to the heart muscle chambers…

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.