Preview

Atrioventricular Valves Research Paper

Satisfactory Essays
Open Document
Open Document
341 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Atrioventricular Valves Research Paper
The heart functions by pumping blood both to the lungs and to the systems of the body. To prevent blood from flowing backwards or “regurgitating” back into the heart, a system of one-way valves are present in the heart. The heart valves can be broken down into two types: atrioventricular and semilunar valves.

Atrioventricular valves. The atrioventricular (AV) valves are located in the middle of the heart between the atria and ventricles and only allow blood to flow from the atria into the ventricles. The AV valve on the right side of the heart is called the tricuspid valve because it is made of three cusps (flaps) that separate to allow blood to pass through and connect to block regurgitation of blood. The AV valve on the left side of the

You May Also Find These Documents Helpful

  • Good Essays

    ~ 2 AV valves are located at each atrial-ventricular junction, prevent backflow into the atria when the ventricles are contracting. : 1) Tricuspid Valve-the right AV valve has 3 flexible cusps. 2) The Mitral Valve-the left AV valve with 2 flaps. It is sometimes called the bicuspid valve because of its resemblance to the 2-sided bishop’s miter or hat. Attached to each AV valve flap are tiny white collagen cords called CHORDAE TENDINEAE, “heart strings” which anchor the cusps to the papillary muscles protruding from the ventricular walls. When the heart is completely relaxed, the AV valve flaps hang limply into the ventricular chambers below & blood flows into the atria and then thru the open AV valves into the ventricles. When the ventricles contracts, compressing the blood in their chambers, the intraventricular pressure rises, forcing the blood superiorly against the valve flaps. As a result, the flap edges meet, closing the valve.…

    • 919 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Hs131 Unit 4 Assignment

    • 1308 Words
    • 6 Pages

    It then continues as the right external iliac which comes together to the inferior vena cava, also known as the posterior vena cava. It is a vein that carries deoxygenated blood from the lower body to the heart. From there, the inferior vena cava leads to the right atrium of the heart. The right atrium is only one of the four hollow chambers of the heart. It receives blood from the superior vena cava and the inferior vena cava. The blood that comes through these veins is low in oxygen (“Right Atrium”, n.d.). After passing through the right atrium, we pass through the right atrioventricular (AV) valve, also called the tricuspid valve, and then we shall go through the right ventricle, lower right-hand chamber of the heart that pumps blood from the right atrium into the pulmonary arteries then to the lungs, to the pulmonary valve, or the pulmonary semilunar valve. The valves of the pulmonary semilunar valve opens when the right ventricle contracts. When the muscles…

    • 1308 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    6. The Mitral valve or tricuspid valve is leaking. The sloshy sound will be heard during the atrial systole. The dub is heard during the ventricular diastole. The chordae tendinae, or heart strings, support the atrioventricular valve because the heart strings connects the papillary muscles to the tricuspid and mitral valve.…

    • 266 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Chapter 18 Notes

    • 1227 Words
    • 5 Pages

    Chapter 18: The Cardiovascular System: The Heart Heart Anatomy Approximately the size of a fist Location Enclosed in pericardium, a double-walled sac Pericardium Superficial fibrous pericardium Deep two-layered serous pericardium Layers of the Heart Wall Epicardium—visceral layer of the serous pericardium Myocardium Endocardium is continuous with endothelial lining of blood vessels Chambers Four chambers: two atria and two ventricles Atria: The Receiving Chambers Walls are ridged by pectinate muscles Vessels entering right atrium o Superior vena cava o Inferior vena cava o Coronary sinus Vessels entering left atrium o Right and left pulmonary veins Ventricles: The Discharging Chambers Walls are ridged by trabeculae carneae Papillary muscles project into the ventricular cavities Vessel leaving the right ventricle o Pulmonary trunk Vessel leaving the left ventricle o Aorta Pathway of Blood Through the Heart The heart is two side-by-side pumps o Right side is the pump for the pulmonary circuit  Vessels that carry blood to and from the lungs o Left side is the pump for the systemic circuit  Vessels that carry the blood to and from all body tissues Pathway of Blood Through the Heart Right atrium  tricuspid valve  right ventricle Right ventricle  pulmonary semilunar valve  pulmonary trunk  pulmonary arteries  lungs…

    • 1227 Words
    • 5 Pages
    Powerful Essays
  • Satisfactory Essays

    2. The atrium and ventricle on each side of the heart are separated by one-way valves called ______.…

    • 465 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    The blood flows through our heart in a series of different steps and factors. Oxygen flows into the heart through the right atrium where at this time the tricuspid valve is closed, allowing the blood to fill the right atrium. Next, the muscle walls of the right atrium contract and push the blood through the tricuspid valve into the right ventricle. Once this occurs the right ventricle contracts and pushes the blood through the pulmonic valve into the pulmonary artery. The oxygen rich blood is then returned from the lungs to the left sides of the heart and into the left atrium. The contract of the muscle of the left atrium pushes the blood out into the left ventricle. Finally once the left ventricle fills with blood the muscle walls contract pushing blood into the aorta and throughout the body (Thibodeau, 2008).…

    • 514 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Blood enters the heart through the Superior Vena Cava which is the large vein at the top of the heart, and the Inferior Vena Cava, which is the large vein at the bottom of the heart. Blood flows into the right atrium, passes through the tricuspid valve, and makes its way into the right ventricle. It then moves through the pulmonic valve, into the pulmonary artery to the lungs.” After picking up oxygen in the lungs, the blood moves out of the lungs into the pulmonary vein, into the left atrium, through the mitral valve, and into the left ventricle that pushes blood to the body through the aortic valve. Once blood leaves the heart it is in the aorta where it flows to various parts of the body” (Whitlock, J. 2017).…

    • 470 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Which of the following is the atrioventricular valve that is located on the left side of the heart?…

    • 481 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Cardiac Self-Quiz

    • 1188 Words
    • 5 Pages

    Name the 2 AV Valves (Atrioventricular) and the 2 SV Valves (semilunar). Valves keep blood flowing in one direction, keeping blood in one chamber until the next chamber is ready.…

    • 1188 Words
    • 5 Pages
    Powerful Essays
  • Good Essays

    The myocardium, commonly referred to as the heart, acts as a pump for transporting blood around the body via a collective system, known as the cardiovascular system. This system has various components; blood vessels; mainly arteries, veins and capillaries. The cardiovascular system has four main functions within the body. Firstly to transport dissolved oxygen, hormones, nutrients, salts, enzymes and urea to cells located around various places within the body, whilst at the same time eliminating any waste products such as carbon dioxide and water. Secondly, to protect the body from infection and blood loss. Thirdly, to distribute heat around the body to enable a healthy temperature of 37oc and finally to aid the body to maintain fluid balance. This ‘human pump’ can be regarded as two pumps. The fist sized organ contains two muscular chambers; the upper chamber; the atrium and the lower; the ventricle. The right side of the heart pumps deoxygenated blood from the veins to the lungs for oxygenation, whilst the left side pumps oxygenated blood from the lungs to the body. It is important to note that the two sides are separated by a septum. The blood flows through the heart twice within one cycle, this is known as ‘double circulation’.…

    • 1354 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Heart Functions

    • 336 Words
    • 2 Pages

    The ventricles are much bigger than the atria and the left ventricle is bigger than the right ventricle.…

    • 336 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Blood flows in one direction through the heart because the heart has valves that prevent backflow. This phenomenon exemplifies:…

    • 1609 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Complete atrioventricular canal defect (CAVC) is a heart condition in which there is a large hole in the center of the heart and only one heart valve. Normally, the heart is divided into four chambers, and there is one valve on each side of the heart. The chambers on the right side of the heart receive blood from the body and pump it to the lungs where the blood gets oxygen. The chambers on the left side of the heart get the oxygen-rich blood from the lungs and pump it back out to the body. In CAVC, the blood in the chambers mix, and the heart valve may not close tightly. This makes the heart work much harder than normal.…

    • 399 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Only 1,966 people our born with atrial septal defect (A.S.D.) each year. That is less than the amount of people in columbus by a huge margin. That does not mean it is not serious disorder. This is when there is an opening in the wall between the heart. This disorder can cause over flowing blood in the lungs and problems pumping blood through the body. These can lead to right side heart failure.…

    • 440 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    R E V I E W S H E E T 30 Anatomy of the Heart…

    • 1045 Words
    • 5 Pages
    Satisfactory Essays