What anatomical structure of the heart produces the "lub" and "dub" sounds? What are Korotkoff sounds? How are the Korotkoff sounds different from the "lub" "dub" sounds?
The Mitral valve and the Tricuspid valve gives off the "lub" and "dub" sounds in the heart cause they are opening and closing in the arortic valve and pulmonary valve. Korotkoff sound is heard when pressure is applied to when taking blood pressure and is only heard at that point. The instrument used to actually hear the sound is a stethoscope.
The "lub" "dub" is from valves opening and closing in the heart and is heard with stethoscope as well as an echocardiogram. Korotkoff sound is only heard while pressure is appllied to the brachial artery when an blood pressure cup is being used and the stethoscope is placed to listen to when sytole and
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dystolic readings are needed. What is the diagnostic valve in auscultating the heart?
What type of information can you get from listening to your heart? (like Roxette did back in 1998).
The diagnostic value of auscultating is to hear any abnormal sounds in the heart. Information from that can be the discovery of abnormal heart beats, tachy cardia and heart murmurs.
Why is it that pressure in your in your arteries is higher than pressure in your veins?
According to our text book our arteries carries blood from our heart to our organs and muscles in our body. The heart pumps the blood and the pressure from the contraction of valves opening and closing pushes the blood with force. The veins are like tiny storage area to supply blood through out the body that is pumped from the heart. The veins are used to get blood specimens and injections.
How can you improve poor circulation?
Poor circulation can be improved in several ways. If a person changes their unhealthy eating habits, stop smoking, get regular execerise, avoid long periods of immobility and elevate the legs circulation can be improved.
What do they mean when they say "blood is thicker than water"? What makes blood
thick? In relation to " blood is thicker than water" family is going to stick together no matter how they may feel about each other. That phrase has been used for centuries in all cultures. Definition: "blood is thicker than water" - relationships and loyalties within family are the strongest and most important ones. google.com Blood can become thick by "heavy proteins" or " too much blood in the circulation". High counts of "red cells", "white cells" and "platelets" will result in blood thickening. cancersmoc.com
In this lab, I took two recordings of my heart using an electrocardiogram. An electrocardiogram, EKG pg. 628 Y and pg. 688 D, is a recording of the heart's electrical impulses, action potentials, going through the heart. The different phases of the EKG are referred to as waves; the P wave, QRS Complex, and the T wave. These waves each signify the different things that are occurring in the heart. For example, the P wave occurs when the sinoatrial (SA) node, aka the pacemaker, fires an action potential. This causes the atria, which is currently full of blood, to depolarize and to contract, aka atrial systole. The signal travels from the SA node to the atrioventricular (AV) node during the P-Q segment of the EKG. The AV node purposefully delays
Left-sided holodiastolic, murmur with point of maximal intensity over the left base. The murmur is decrescendo shaped.
The structures responsible for these sounds are: pulmonary, aortic and atrioventricular valves. These sounds are results of vibration caused by closure of these valves. Other sounds known as "heart murmurs" are sometimes a sign of heart disease. "Murmurs can be produced by blood flowing rapidly in the usual directions through an abnormally narrowed valve" (Vander, Sherman and Luciano, 1985, p.326) and in some cases, as mitral valve prolapse, the individual does not show any symptoms.
The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.
The Structure and Functions of the Arteries Arteries are blood vessels that convey blood from the heart to the tissues of the body. The arteries expand and then constrict with each beat of the heart, a rhythmic movement that may be felt as the pulse. Arteries are usually named from the part of the body that they are found, for example; brachial artery found in the arms, metacarpal artery found in the wrist; or from the organ which they supply as the hepatic artery supplies the liver, pulmonary artery brings deoxygenated blood the lungs. The facial artery is the branch of the external carotid artery that passes up over the lower jaw and supplies the superficial portion of the face; the haemorrhoidal arteries are three vessels that supply the lower end of the rectum; the intercostal arteries are the arteries that supply the space between the ribs; the lingual artery is the branch of the external carotid artery that supplies the tongue. The structure of the artery enables it to perform its function more efficiently.
A normal heart rhythm begins at the sinoatrial node and follows the hearts conduction pathway without any problems. Typically the sinoatrial node fires between 60-100 times per minute (Ignatavicius & Workman, 2013). When a person has Atrial Fibrillation, the sinoatrial node releases multiple quick impulses at a rate of 350 -600 times per minute. When this happens, the ventricles respond by beating around 120- 200 beats per minute, making it tough to identify an accurate heart rate. This arrhythmia can be the result of various things. During a normal heart beat, the electrical impulse begins at the sinoatrial node and travels down the conduction pathway until the ventricles contract. Once that happe...
The heart is two sided and has four chambers and is mostly made up of muscle. The heart’s muscles are different from other muscles in the body because the heart’s muscles cannot become tired, so the muscle is always expanding and contacting. The heart usually beats between 60 and 100 beats per minute. In the right side of the heart, there is low pressure and its job is to send red blood cells. Blood enters the right heart through a chamber which is called right atrium. The right atrium is another word for entry room. Since the atrium is located above the right ventricle, a mixture of gravity and a squeeze pushes tricuspid valve into the right ventricle. The tricuspid is made up of three things that allow blood to travel from top to bottom in the heart but closes to prevent the blood from backing up in the right atrium.
Blood pressure, flow and resistance in the body are referred to as the hemodynamic. Certain changes or lack of proper pressure, flow or resistance can cause major problems making proper function critical for survival. Blood viscosity is not always the same, it increases the same way hematocrit does. When there are changes in hematocrit we can see a significant effect on the resistance to the flow in various situations such as in extreme dehydration. When the body does not get enough water it becomes dehydrated, and there is an increase in hematocrit in the blood. The Length is not a factor in the control of resistance, yet the radii of blood vessels do not remain constant. Radius does influence the resistance and the flow of fluids.
To understand the complications that occur in the heart when dealing with AF, one must first understand how the heart functions and how it sends the electrical signals that cause the heart to beat. In the upper right chamber of the heart, known as the right atrium, electrical signals are sent from the sinoatrial (SA) node through the electrical impulses known as autorhythmic cells. These autorhythmic cells essentially make the heart beat because they begin the electrical impulses that cause the heart to pulse in a rhythmic pattern. The right atrium fills with blood and then uses the electrical impulse created by the SA node to push the blood to the lower right chamber of the heart known as the right ventricle. The autorhythmic cells are sent through the atriums of the heart, which causes it to contract. That electrical impulse arrives at the atrioventricular (AV) bundle in a lower part of the right atrium. The (AV) bundle uses these electrical impulses to separate the tricuspid valves to allow blood from t...
Ultrasounds have been a part of the medical world since the 1940s. The affects of acoustic vibrations on the body were studied as early as the 6th century. Then, ultrasound gained widespread acceptance as a therapeutic trea...
The body's blood consists of many components, red blood cells, white blood cells, plasma, and platelets. Red blood cells deliver oxygen to your body and remove waste. Without them, your body would slowly die. They contain a protein chemical called hemoglobin, which gives it it’s red color. Also, hemoglobin contains Iron, making oxygen molecules attach to it so as the blood passes through tissue...
with mitral valve prolapse. The mitral valve has two sail like structures called leaflets. When the
walls of the veins are permeable to H2O at this point, starving the rest of the
The heart is a pump with four chambers made of their own special muscle called cardiac muscle. Its interwoven muscle fibers enable the heart to contract or squeeze together automatically (Colombo 7). It’s about the same size of a fist and weighs some where around two hundred fifty to three hundred fifty grams (Marieb 432). The size of the heart depends on a person’s height and size. The heart wall is enclosed in three layers: superficial epicardium, middle epicardium, and deep epicardium. It is then enclosed in a double-walled sac called the Pericardium. The terms Systole and Diastole refer respectively and literally to the contraction and relaxation periods of heart activity (Marieb 432). While the doctor is taking a patient’s blood pressure, he listens for the contractions and relaxations of the heart. He also listens for them to make sure that they are going in a single rhythm, to make sure that there are no arrhythmias or complications. The heart muscle does not depend on the nervous system. If the nervous s...
column of blood to balloon the walls of the superficial veins which in turn causes damage to the