How the Frank–Starling law of the heart matches stroke volume to venous return.

Q: how five variables change over time when blood volume decreases

A: The cardiovascular system consists of the heart and the blood vessels. The heart is the pumping…

Q: which arrhythma refers to rapid, random, inefficient, and irregular contrations of the atria and…

A: Arrhythma is defined as the speed of heart beat which may be slow and fast . Bradycardia = slow…

Q: Part A - Why do arteries have many more elastic fibers than veins? O They have less pressure during…

A: Why do arteries have many more elastic fibers than veins:

Q: Physiology and Anatomy of Circulatory System

A: Blood - General - Formed elements (45%) suspended in plasma (55%). - 8% of body weight. 5-6 L…

Q: What causes heart murmers in diastole and in systole

A: Diastole:It is the phase of the heartbeat when the heart muscle relaxes and allows the chambers to…

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: Differences between Open and Closed Circulatory systems and explain. How does blood clotting…

A: Circulatory system: To receive oxygen, the circulatory system pushes the blood from the heart to the…

Q: The AV node fires, traveling down the Bundle of His Branches and to the Purkinje Fibers. This causes…

A: The atrioventricular node (AV node) is present near the coronary sinus opening. The specialized…

Q: Label structures of the heart...

A: Given: To label the structure of heart. The heart is the important organ in human body and it pumps…

Q: Why calcium imbalances affect contractility; changes in cardiac function associated with…

A: Calcium is found to be one of the minerals that are essential for life. It plays a major role in…

Q: Why low capillary blood pressure is desirable

A: Capillaries are microscopically thin blood vessels in the circulatory system. They are the sites of…

Q: Anatomy : summary of the Arteries of systemic circulation: topography of the aorta, branches of the…

A: Blood circulates throughout the body through blood vessels. There are two types of circulation:…

Q: The mathematical relationship between peripheral resistance and vessel radius; why this is related…

A: Blood is a non-Newtonian fluid, thus it is better analyzed using rheology rather than hydrodynamics.…

Q: relation between electrocardiogram and arrhythmia

A: The rate of heartbeat and the problem associated is an arrhythmia. The heartbeat may be too fast or…

Q: The isovolumetric contraction in ventricles appears:

A: Isovolumetric contraction in general means that although contraction takes place in the ventricles,…

Q: The elastic properties of the arteries are essential for blood flow. Explain the importance of this…

A: Arteries and the blood are the components of the circulatory system of an organism. Circulatory…

Q: The sinoatrial node is also called the A. PacemakerB. Action potentialC. Resting membrane potent

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

Q: Why physical inactivity can lead to venous

A: Lack of physical excercise can cause various complicaation in the bodys such risk of heart disease…

Q: The difference between blood flow and perfusion

A: Blood flow refers to the movement of blood while perfusion is the amount or volume of the blood that…

Q: Effect of adrenaline on heart rate and contractility

A: Adrenaline is a hormone released from the adrenal glands and its major action, together with…

Q: Factors that affect blood pressure

A: Blood pressure is the amount of pressure that is applied to the circulating blood vessels OR It is…

Q: Blood flows from the ascending aorta right into the thoracic aorta.TRUE or false

A: The circulatory system is composed of the heart, arteries, capillaries, and veins. It transports…

Q: different types of arrhythmia

A: The heart is a muscular organ that is divided into four chambers: Left auricle, right auricle, left…

Q: erpreting an ECG ECG interpretation. Following are two tracings for which you will calculate the…

A: 2.To calculate the heart rate multiply the number of QRS complexes by six.   In tracing 1: there are…

Q: how Physiological effects  it impacts upon the body system. for coronary heart disease

A: Coronary heart disease is caused due to the narrowing of the coronary arteries. The coronary…

Q: Three ways of quantifying the RBCs andhemoglobin level of the blood; the definition and units of…

A: Red Blood Cells(RBCs) are one of the types of blood cells that play a major role in the…

Q: which ventricle ejets more blood

A: Answer.   Considering a few cardiac cycles it is found that left ventricle pumps more blood than the…

Q: Interpretation of Electrocardiogram for identification of arrhythmia in different heart disease

A: Electrocardiogram (ECG) is the method used to determine functioning of heart and its abnormalities.…

Q: Why physical inactivity can lead to venouspooling; consequences of venous pooling

A: The blood is the primary transport medium of the body. It is transported through several vessels…

Q: importance of smooth muscle cells present in the aorta

A: Introduction :- Smooth muscle cells (SMCs) are non-striated, involuntary muscle cells that line the…

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: Why the  venous thrombosis occur more than  in the artery

A: Thrombus formation is a blood clot that remains attached to a blood vessel wall.  It prevents blood…

Q: Flow of the blood through the heart

A: The plasma, blood cells, and platelets that form blood circulate throughout the body through blood…

Q: Effect of physical activity on heart rate if results are recoded on ECG

A: An electrocardiogram (ECG) is an instrument that records the electrical signal of your heart to…

Q: Which vessels contribute most to altered systemic blood pressure when their smooth muscles contract…

A: Arteries carry blood away from the heart, whereas veins carry blood to the heart. Arteries branch to…

Q: Assuming that the cardiac cycle begins at the end of diastole put the following ventricular phases…

A: The correct order of  occurance of Ventricular phase is:- 1)Isovolumetric contraction phase…

Q: Effect

A: Atropine is  a naturally occurring tropane alkaloid   extracted from Deadly nightshade (Atropa…

Q: The period of ventricular filling - O phase 1 of pacemaker action potential O phase 3 of contractile…

A: Heart remains in systole for about 0.3 seconds and diastole for 0.5 seconds. The diastole is a…

Q: After his accidents Christopher Reeves heart would stop beating eventually because the breaking of…

A: Answer : False

Q: What is a Holter monitor? Under what circumstances would one be ordered for a patient?

A: Since you have posted multiple questions and few questions have been answered already, we will…

Q: EDV, ESV, SV and CO of the heart.

A: The heart has two separate pumps where the blood flows in a unidirectional aspect from the right…

Q: In a normal beat the heart ejects about 90% of the blood in its chambers.  True  False

A: Heart is an organ which helps in pumping of blood through the blood vessels of circulatory…

Q: Effect of hypoxia on the cardiovascular system with results recorded on ECG

A: The cardiovascular system is an essential system in the body, that is responsible for pumping blood…

Q: . A series of simple, well-labelled, schematic diagrams to illustrate the chambers of the heart and…

A: CHAMBERS OF HEART..

Q: Relationship between decompensation of heart failure and acute renal failure

A: The presence of uncontrolled hypertension and coronary artery disease can result in the progression…

Q: The left and right sides of the heart are separated by a structure called the ___ .

A: Heart is chief pumping organ in the circulatory system which supply blood to each and other parts of…

Q: a. Differences between: ii. Typical and atypical ova of Capillaria philippinensis

A: Nematodes are the organism belongs to animal kingdom . They are round worms which comprises of…

Q: Movemen of ions into/out of cardiac cells that allow for automaticity…

A: Depolarization of cardiac cells happens due to the diffusion of Na+ ions into the sinoatrial nerve.…