Heart

The trumpet has three valves to change the pitch. Each valve actually makes the trumpet longer, which lowers the pitch.

In order from shortest to longest:

* The Second Valve lowers the pitch 1/2 step (one key on the piano, such as from G to F#) * The First Valve lowers the pitch 1 whole step (two keys on the piano, such as from G to F, or from C to Bb). * The Third Valve lowers the pitch 1 and 1/2 steps (three keys on the piano, such as from G to E, or from C to A). The valves can be pushed in combination to lower the pitch further. For example, pushing the first and third valves would lower the pitch 2 and 1/2 steps, or from G to D on a piano keyboard.

To win at hearts you will need to have the lowest score at the end of the game. You will need to avoid winning any tricks including a heart or the Queen of Spades (the Black Maria) or win all the 13 hearts and the Black Maria.

The sounds in the heart are caused by the opening and closing of the ventricles. There are two sounds and they are called by the first heart sound (S1) and second heart sound (S2), produced by the closing of the AtrioVentricular valves and semilunar valves respectively.

My mother received shock therapy back in the late sixties,she had short term memory loss but seemed to come out of her depression for a short period of time,later we discovered she had a heart murmer that had not been detected before. We were always concerned that the shock therapy caused the heart conditions that gradually become more severe,she died at the age of 63 from a brain clot,we think it was all retlated to the treatmenta nd I would be very concerned for anyone who is thinking of getting this type of treatment...It is just speculation,but I would not have it EVER. Rosey fromTexas

The blood flows through the aorta after exiting the left ventricle through the aortic valve.

From the vena cava, blood travels into the right atrium, then the right ventricle. The right ventricle pumps the blood through the pulmonary arteries to the lungs. The pulmonary vein carries the oxygenated blood back to the left atrium. The blood flows from the left atrium into the left ventricle which pumps the blood through the aorta and to the rest of the body.

The fetal and adult cardiovascular systems exhibit significant differences, reflecting different sources of respiratory and nutritional support. Most strikingly, the embryonic lungs are collapsed and nonfunctional, and the digestive tract has nothing to digest. The nutritional and respiratory needs of the fetus are provided by the diffusion across the placenta. Blood flow to the placenta is provided by a pair of umbilical arteries which arise from the internal iliac arteries and enter the umbilical cord. Blood returns from the placenta in the single umbilical vein, bringing oxygen and nutrients to the developing fetus. The umbilical vein drains into the ductus venosus, a vascular connection to an intricate network of veins within the developing liver. The ductus venosus collects blood from the veins of the liver and from the umbilical vein, and empties into the inferior cava. When the placental connection is broken at birth, blood flow ceases along the umbilical vessels, and they soon degenerate. However, remnants of these vessels persist throughout life as fibrous cords. Throughout embryonic and fetal life, the lungs are collapsed; yet after delivery, the newborn infant must be able to extract oxygen from inspired air rather than across the placenta. Although the interatrial and interventricular septa develop early in fetal life, the interatrial partition remains functionally incomplete until birth. The foramen ovale, or interatrial opeing, is associated with a long flap that acts as a valve. Blood can flow freely from the right atrium to the left atrium, but any backflow will close the valve and isolate the two chambers from one another. Thus, blood entering the heart at the right atrium can bypass the pulmonary circuit. A second short-circuit exists between the pulmonary and aortic trunks. This connection, the ductus arteriosus, consists of a short, muscular vessel. With the lungs collapses, the capillaries are compressed and little blood flows through the lungs. During diastole, blood enteres the right atrium and flows into the right ventricle, but it also passes into the left atrium through the foramen ovale. Avout 25 percent of the blood arriving at the risght atrium bypasses the pulmonary circuit in thie way. In addition, more than 90 prcent of the blood leaving the right ventricle passes through the ducus arteriosus and enters the systemic circuit rather than continuing to the lungs. After birth, when the infant takes the first breath, the lungs expand, and so do the pulmonary vessels. The resistance in the pulmonary circuit declines suddenly, and blood rushes into the pulmonary vessels. Within a few seconds, rising oxygen levels stimulate the constriction of the ductus arteriosus, isolating the pulmonary and aortic trunks from one another. As pressures rise in the left atrium, the valvular flap closes the floramen ovale. In adults, the interatrial septum bears the fossa ovalis, a shalow depression that marks the side of the foramen ovale. The remnants of the ductus arteriousus, persists throughout life as the ligamentum arteriosum, a fibrous cord. The fetal and adult cardiovascular systems exhibit significant differences, reflecting different sources of respiratory and nutritional support. Most strikingly, the embryonic lungs are collapsed and nonfunctional, and the digestive tract has nothing to digest. The nutritional and respiratory needs of the fetus are provided by the diffusion across the placenta. Blood flow to the placenta is provided by a pair of umbilical arteries which arise from the internal iliac arteries and enter the umbilical cord. Blood returns from the placenta in the single umbilical vein, bringing oxygen and nutrients to the developing fetus. The umbilical vein drains into the ductus venosus, a vascular connection to an intricate network of veins within the developing liver. The ductus venosus collects blood from the veins of the liver and from the umbilical vein, and empties into the inferior cava. When the placental connection is broken at birth, blood flow ceases along the umbilical vessels, and they soon degenerate. However, remnants of these vessels persist throughout life as fibrous cords. Throughout embryonic and fetal life, the lungs are collapsed; yet after delivery, the newborn infant must be able to extract oxygen from inspired air rather than across the placenta. Although the interatrial and interventricular septa develop early in fetal life, the interatrial partition remains functionally incomplete until birth. The foramen ovale, or interatrial opeing, is associated with a long flap that acts as a valve. Blood can flow freely from the right atrium to the left atrium, but any backflow will close the valve and isolate the two chambers from one another. Thus, blood entering the heart at the right atrium can bypass the pulmonary circuit. A second short-circuit exists between the pulmonary and aortic trunks. This connection, the ductus arteriosus, consists of a short, muscular vessel. With the lungs collapses, the capillaries are compressed and little blood flows through the lungs. During diastole, blood enteres the right atrium and flows into the right ventricle, but it also passes into the left atrium through the foramen ovale. Avout 25 percent of the blood arriving at the risght atrium bypasses the pulmonary circuit in thie way. In addition, more than 90 prcent of the blood leaving the right ventricle passes through the ducus arteriosus and enters the systemic circuit rather than continuing to the lungs. After birth, when the infant takes the first breath, the lungs expand, and so do the pulmonary vessels. The resistance in the pulmonary circuit declines suddenly, and blood rushes into the pulmonary vessels. Within a few seconds, rising oxygen levels stimulate the constriction of the ductus arteriosus, isolating the pulmonary and aortic trunks from one another. As pressures rise in the left atrium, the valvular flap closes the floramen ovale. In adults, the interatrial septum bears the fossa ovalis, a shalow depression that marks the side of the foramen ovale. The remnants of the ductus arteriousus, persists throughout life as the ligamentum arteriosum, a fibrous cord.

Yes, the pressure in the left atrium should be much higher than the pressure on the right side. The left atrium has to push blood into the left ventricle, which is much tougher and more muscular because it has to push blood throughout the entire body. The right atrium only has to fill the right ventricle, which is only pushing blood through the lungs.

No. The left ventricle pumps blood at a higher pressure, and through much more real estate than the right ventricle, but the actual volume pumped by each ventricle is exactly equal at all times, except in certain pathological heart conditions. Think about what would happen if one side of the heart pumps more blood than the other. Excess blood would get backed up and accumulate since the opposite side is pumping lower volumes. In severe instances, this imbalance can be enough to cause death.

Arteries carry red blood cells (along with other cells) away from the heart. These red blood cells contain hemoglobin which helps to transfer the oxygen itself.

The cardiac muscle has a special type of tissue that spontaneously generates electrical activity. In the wall of the right atrium there is a group of cells that forms a special tissue called the sino-atrial node. In the wall between the right atrium and the right ventricle there is another similer tissue called the atrioventricular node. The sino atrial node is known as the pacemaker. It generates rhythmic electric waves that spread to the two aria causing them to contract. The electric wave spreading from the sino atrial node reaches the atrioventricular node and causes it to fire an electric wave that spreads to the two ventricles. The electric wave from the AVN travels in special muscle fibres called the bundle if His and from there throughout the pinkie fibres to the two ventricles. This makes the two ventricles contract and force blood into the systemic and pulmonary circuits.

The cardiac ventricles are the two lower chambers of the heart's four chambers. They are larger and more narrowed than the atria. They function by collecting the blood that flows into them from the atria and then contract in order to expel blood into the peripheral tissues, using major vessels to carry it to the extremities and lungs.

ask your doctor.i would do that.

The right ventricle receives blood from the right atrium, and the right atrium receives blood from the pulmonary veins.This blood was already drained from the whole body to the vena cavae. So its from veins in the body to venae cavae, from venae cavae to pulmonary veins, from pulmonary veins to the right atrium, from the right atrium then to the right ventricle.

A normal heart rate for an adult in a resting state is between 60 and 101 beats per minute (bpm). If yours is 197, it's time to see a doctor and I mean immediately, right now!! Get your butt up and get to a hospital emergency room!

No. The heart sounds are caused by the closure of heart valves. The first heart sound is caused by the closure of the AV valves (tricuspid and mitral). The second heart sound is the result of the closure of the aortic and pulmonic valve after the completion of systole. Turbulence of blood flow through the aortic valve would cause a murmur (an abnormal heart sound) during systole.

Yes.

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No, the end diastolic volume does not with your heart rate. The end diastolic volume decreases as your heart rate increases. End diastolic volume is the amount of blood that is in the ventricles during diastole.

the great arterial trunk that carries blood from the heart to be distributed by branch arteries through the body .(noun)

The left side: the ventricals.

The faster the recovery heart rate drops, the more fit you are.

pulmonary circulation is the circulation of blood between your heart and your lungs

There are a variety of different methods to accomplish a heart valve replacement, ranging from a pig valve to prosthetic valve replacement. The cost for the prosthetic valve replacement surgery, as of 2011, was $78,000.

murmur
murmur
A murmur is a heart sound caused by turbulent blood flow resulting from an abnormal heart valve that either does not close appropriately or does not open normally.

I have no idea, thats why im asking the question!!

Well, I've just calculated 720, 000, based on an Olympic swimming pool holding 2500,000 litres (Wikipedia); and one heartbeat pumping 70cm3 of blood at 70 beats/minute, and an average lifetime being 70 years

= 1.8 x 10^11/2.5 x 10^6

= 720000