What is the valve thatseparates the aorta from theheart? What is the importanceof that valve?

Q: What is the role of the coronary arteries?

A: The heart is an organ that can pump blood to the different parts of the body through different blood…

Q: What is the valve thatseparates the right ventriclefrom the pulmonary artery?Why is that valve…

A: The heart is the muscular organ that involves in pumping action of blood to all parts of the tissue.…

Q: How is the return of venous blood to the heart accomplished?

A: The veins (blood vessels) that return the blood to the heart. The pressure developed in the veins…

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: What is vena cava? Whichtype of blood circulates withinthe vena cava?

A: The heart is the muscular organ that involves in pumping action of blood to all parts of the tissue.…

Q: What is the largest vein that drains the coronary circulation called, and where is it located?

A: Veins are blood vessels of the heart that helps to carry blood towards the heart. They transports…

Q: Explain why veins are the only blood vessels thatcontain valves.

A: Veins are the blood vessels that carry blood from tissues back to the heart. The veins carry…

Q: What is the sequencial order of arteries to smaller parts?

A: The circulatory system is a network consisting of blood, blood vessels, and the heart, this system…

Q: How do veins differ structurally and functionally from arteries?

A: Functionally Veins carry blood towards the heart and Artery carry blood away from the heart.

Q: How does the heart impelthe blood?

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

Q: Which vein returns blood from the abdominopelvic viscera to the heart?

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

Q: Where does the thoracic aorta begin?

A: The heart is the primary circulatory organ of the body that comprises cardiac muscle tissue. The…

Q: What are the valves called that go from the ventricle to out of the heart?

A: The heart is a hollow, muscular organ primarily of cardiac muscles that functions as a pump to…

Q: What are atrioventricular valves ? Where they are located ?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: Describe how the rate changes as blood flows throughthe aorta to the venae cavae.

A: Blood is a body fluid in humans and other animals. It delivers necessary substances such as oxygen…

Q: What are the principal heart valves, and what is the function of each?

A: Human heart is a organ which is part of circulatory system and is situated in the space of thoracic…

Q: How do gap junctions and intercalated disks aidcontraction of the heart?

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

Q: More fluid leaves the capillary than returns to it, so how is theremainder returned to the vascular…

A: The semipermeable capillary membrane helps in the exchange of gases, nutrients, and waste…

Q: Why does bloodflow decrease significantly at the capillaries?

A: Capillaries is a network of vessels which connects the arteries to vein

Q: Why is there a pause after the atrial contraction andbefore the ventricular contraction?

A: The human heart has four chambers within it. These four chambers are the Right and Left atria and…

Q: What are the capillaries ofthe vascular system?

A: The heart is the muscular organ that involves in pumping action of blood to all parts of the tissue.…

Q: What are the blood vesselsthat carry venous blood to theheart? What is the bloodvessel that collects…

A: The heart is the muscular organ that involves in pumping action of blood to all parts of the tissue.…

Q: Do the arteries that carryblood from the heart to thelungs contain arterial orvenous blood? What…

A: The human heart contains four chambers: two upper atria, and two lower ventricles. The…

Q: What is the differencebetween systole and diastole?

A: Diastole and systole are two phases of the cardiac cycle. They occur as the heartbeats, pumping…

Q: Why are the left and right coronary vessels considered the major coronary vessels?

A: The coronary vessels are the blood vessels which are responsible for supplying blood to the heart.

Q: Identify the three main branches of the aortic arch that receiveoxygenated blood, and identify the…

A: The three main branches of the aortic arch are: Brachiocephalic trunk: It is the largest branch of…

Q: Which is the first (human)heart chamber into whichblood enters? Where does theblood go after passing…

A: The cardiovascular system consists of the heart, blood, and blood vessels and is also known as the…

Q: Of which type of tissue isthe heart made? How is thistissue oxygenated andnutrified?

A: The heart is a muscular pumping organ present in almost all higher animals. It is made up of cardiac…

Q: How does the blood in the pulmocutaneous arch differ from that in the higher two aortic arches?

A: The circulatory system of amphibians includes pulmocutaneous circulation. It is in charge of…

Q: Which of the following is TRUE of veins?

A: Veins are thin-walled structures inside which a set of valves keeps blood in the body flowing in one…

Q: All the blood that passes through the aorta, except the blood that flowsinto the coronary vessels,…

A: Resistance is a force that opposes the flow of a blood.

Q: What type of blood vessel takes the blood to the heart:artery, capilllary, or vein?

A: The cardiovascular system or blood circulatory system involves in the supply of nutrients and oxygen…

Q: viscosity of the fluid affect the capillary height?

A: Viscosity is the resistance for fluidity of liquid. Hence it also affects the capillary height.…

Q: What is the function of theright ventricle? To where doesthe right ventricle pump thevenous blood?

A: The heart is a muscular organ that pumps blood throughout the body. It is located in the middle…

Q: What is the pericardial fluid?

A: The human heart is located in the thoracic cavity between the lungs. It is a hollow, fibromuscular…

Q: Name the valves that guard openings in the heart.

A: Heart  It is a muscular structure present in the body. It's function is to pump blood to various…

Q: What causes the "lub" sound in the cardiac cycle?

A: A lub (also known as S1) and a dub (S2) are the two sounds of the normal cardiac cycle. There may be…

Q: What is one of the most fundament roles of blood circulation?

A: Blood consists of red blood cells and an oxygen-carrying molecule known as hemoglobin. Blood…

Q: What is the role of stomodeal valve?

A: Cockroaches are brownish black bodies animals, nocturnal omnivores that are living in damp places…

Q: Why is it important that the AV node delay the electricalimpulse moving from the SA node and the…

A: The  AV node is a part of the electrical conduction system of the heart that coordinates the top of…

Q: To which heart chamberdoes the blood go afterleaving the left atrium? Whatis the valve that…

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

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

A: Introduction: The largest artery present in human body is the aorta which starts from the top of the…

Q: Where are the aortic and pulmonic valves in relationship to eachother?

A: Introduction  Valves of the heart: Hearts have two pairs of valves which helps heart in back flow of…