What is meant by the term venous return?

Q: What is the difference between pericardium and endocardium?

A: The heart is a four-chambered muscular organ that is made up of cardiac muscles. The wall of the…

Q: What can affect the central venous pressure?

A: Central venous pressure (CVP) is that the pressure within the venae cavae, close to the right atrium…

Q: What is the functional significance of the difference in thickness between the wall of the aorta and…

A: The aorta is the main artery which carries blood away from heart to the rest of  body.  The…

Q: Define venous sinus

A: Sinuses are a connected network of hollow cavities present in the skull.

Q: How does a change in vessel diameter affect peripheral resistance?

A: Blood vessels can be defined as the channels or the behavior through which blood is distributed to…

Q: What is the reason for coloring blood vessels red and blue in drawings? Which vessels are usually…

A: Veins are the only blood vessels that can be visible near the outside of the epidermis since…

Q: How does heart failure lead to edema in the pulmonary and systemic vascular beds?

A: The human heart is defined as an organ that will pump the blood throughout the human body via the…

Q: Why less pressure is lost overcoming resistance between the arteries and the capillaries?

A: The oxygenated blood pumped by the left ventricle have a certain amount of pressure in it which…

Q: Explain how muscular activity and venous valves aid venous return.

A: The skeletal muscle contractions will compress the venous vessels and forcing the blood centrally…

Q: Define capillary exchange and describe the two majorforces involved.

A: Capillary exchange refers to the exchange of material from the blood into the tissues in the…

Q: How does blood return to the heart despite the low pressure?

A: Answer: Introduction: The heart is a muscular organ present behind and partially left of the…

Q: What factors enhance venous return during exercise?

A: Venous return refers to the flow of blood from the periphery to the right atrium of the heart…

Q: What are the three factors that alter resistance? How does each affect blood flow in vessels?

A: The circulatory system is one that allows blood to circulate and move supplements, oxygen,…

Q: What is a a bulge in the arterial wall called?

A: Ans. A bulging, weak region in the blood vessel wall is called an aneurysm. It can occur in any…

Q: Why are the tendinous cords required for the proper functioning of the AV valves?

A: The heart is a muscular organ of the cardiovascular system that functions to pump the blood to the…

Q: If a woman’s mean arterial pressure is 85 mmHg and her systolic pressure is 105 mmHg, what is her…

A: Introduction:Blood pressure is the pressure exerted by the blood on the walls of the arteries.…

Q: What are some of the causes of coronary arterial disease?

A: Components of closed circulatory system It consists of heart to pump the blood, blood vessels like’s…

Q: Why is the velocity of blood flow faster in arteries and veins than in capillaries?

A: Rate or Velocity of blood flow varies inversely with the total cross sectional area of the blood…

Q: How does mean arterial pressure differ from systolic pressure and diastolic pressure?

A: Blood pressure is defined as the quantity of force exerted by the flowing blood over the inner walls…

Q: What is the most important factor causing pulmonary artery constriction? What other factors are…

A: Pulmonary artery vasoconstriction is the homeostatic mechanism that occurs in the pulmonary…

Q: Can the pacemaker be observed directly on an ECG?

A: Pacemaker: In individuals, who are affected with arrhythmias, a condition in which the heart beats…

Q: What is the force driving venous return?

A: * Veins are blood vessels which return blood to the heart. * The pressure in these veins is the…

Q: Assuming a patient is presented with an 18% decrease in blood flow rate through a given portion of…

A: Blood flow self-regulation is a fantastic phenomenon that regulates blood supply and demand for…

Q: How is blood able to flow along the venous system yet it has a low pressure

A: INTRODUCTION Blood is a liquid body substance in humans and other animals that delivers necessary…

Q: What potential problems do you think could develop if the watery secretions produced by the visceral…

A: The heart along with the blood vessels make up the circulatory system. It is responsible for the…

Q: Why is Sinus bradycardia often normal in athletes?

A: The average heart beat of a human at rest is about 60-100 beats per minute(bpm). Bradycardia is a…

Q: What is meant by autoregulation of blood flow and what is the mechanism involved

A: autoregulation of blood flow is regulated by neuro hormonal factors, physical pressure, endothelial…

Q: How is local blood flow dependent on total blood flow?

A: Blood flow refers to the circulation of blood through the vessels from arteries to the capillaries…

Q: What is the normal function of the aortic and carotid sinus baroreceptors?

A: Receptors are chemical structures made up of proteins that collect and send signals that can be…

Q: What is cardiovascular mechanics and why is it relevant ?

A: Circulatory system plays the very important role of delivering nutrients and oxygen to the cell and…

Q: What is the advantage of double circulation?

A: The heart is a muscular organ that is divided into the left and right side to prevent the mixing of…

Q: What pressure changes cause the closing of the AV valves and the opening of the semilunar valves?

A: AV valve stands for atrioventricular valves, which are responsible for connecting the atrium to the…

Q: What happens when the Pulse pressure Increases?

A: Pulse pressure (Pp) is the difference between systolic and diastolic blood pressure (BP). The…

Q: What is the function of the coronary sinus?

A: Blood that has been exposed to oxygen in the lungs is said to be oxygenated blood. Blood that has a…

Q: How does blood pressure in the pulmonary circulation compare to the pressure in the systemic…

A: The pulmonary circulation is a relatively low-pressure system as compared to systematic circulation…

Q: How is Cardiac Index?

A: Cardiac index (CI) is the amount of blood pumped from the left ventricle per minute per unit body…