If you order your custom term paper from our custom writing service you will receive a perfectly written assignment on The Human Heart. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality The Human Heart paper right on time.
Out staff of freelance writers includes over 120 experts proficient in The Human Heart, therefore you can rest assured that your assignment will be handled by only top rated specialists. Order your The Human Heart paper at affordable prices!
The human heart is the organ most needed for life.The heart is defined/recoginized
as a muscular,pear-shaped organ slightly larger than a clenched fist, which is located
in the center of the circulatory system.The heart has the hardest job which is pumping
blood throughout the whole human body.It pumps blood at a rate of more than 4
Cheap custom writing service can write essays on The Human Heart
quarts a minute and weigh around 8-1 ounces, this organ beats at a rate of 7 times
a minute (on an average).The heart is one of the most amazing organs!
The heart is a very strong muscle. It consists of several layers of tough
muscular wall, called the myocardium. The outside is covered by a thin tissue called
the pericardium and the inside is linded with a layer called the endocardium. The
heart is divided in the middle to make the right and the left heart, which in turn are
subdivided into chambers. The auricle, is the upper chamber and the ventricl is the
lower chamber.The auricles recieve blood for entering the heart; the ventricles pump
the blood out.The circulated blood enter the heart through the right auricl, passes
through th tircuspid valve into the right ventricle below, then it is pumped through
the pulmonary artery to the lungs for oxygenation.Stimulataneously, the oxygenated
blood is pumoed through the left auricle, flows through the bicuspid or mitral, valve
into the left ventricl and then is pumped into the aorta and out to the arteries of the
body.The hearts valves allow the blood to flow in one direction only and help
maintain the pressure required to pump the blood throughout the whole body.The
heartbeat or otherwise known as pumping of the heart is caused by a;ternating
contractions and relaxations of the myocardium.The contractions are stimulated by
electrical impulses the sinoatrial, or S-A, node located in the muscle or the right
auricle. An impuls from this node causes the auricles to contract, which then forces
blood into the ventricles.The atrioventricular controls the impulses the cause the
ventricles to contract, which is located in the junction of the ventricles. This whole
process is called the cardiac cycle.The relaxation period is called diastole and the
period of contraction is called systole. Diastole is the loger of the phases so that the
heart can rest between contractions. The rate or triggering the S-a impulses is
regulated by the autonomic nervous system (ANS). This system is involuntary which
means we don't have to think about it in order fo that to happen. The heart beat
slows or accelerates in respons to physical activity. Theart can be heard through a
device called a stethoscope, when placed against the chest a healthy heart will make a
"lub-dub.......lub-dub" kind of sound. The "lub" is caused by the closing of the valves
between th auricles and the ventricles. The "dub" is caused by the closing of the
valves of the arteriesleadind out of the heart. Heart murmurs may be easily heard by
a physician as a soft shiwshin or hissing sound. Murmurs may indicate that blood is
leaking through an imperfectly closed valve and may signal a serous heart problem.
Theree are main types of blood vessels arteties, capillaries, and veins.
Arteries begin in the aorta, the large artery leaving the heart. Arteries can carry
oxygen-riched blood away fom the heart to all the body's tissues. They branch several
times becoming smaller as the carry blood further away from the heart. Capillaries
are small, thin blood vessels that connect the arteries and the veins. Their thin walls
allow oxygen, nutrients, carbod dioxide and waste products to pass to and from the
tissue cells. Veins are blood vessels that take oxygen poor blood back to the heart.
Veins become larger as the become closer to the heart. The superior vena cava is the
large vein that brings blood from the head and arms to the heart, the inferior vena
cava brings blood from the abdomen and the legs to the heart. This vast system of
vessels is over 60,000 miles long, which is enough to go around the world times!
There are many disorder to the heart. the main one is a heart attack. The
definition of a heart attack is a disorder in which damage to an area of heart muscle
occure because of an inadequate supply of oxygen to that area.Causes include clot
formation or spasm in one of the arteries that supply the heart muscle (a coronary
artery). This and other similar conditions block the supply of oxygen to an area of the
heart, whic leads to damage or death of cells in that particular area. Most often this
occurs in a coronary artery that has been narrowed from changes related to
atherosclerosis (which I will explain later). The damaged tissue resuts in a
permanenet loss of contraction in that portion of the heart muscle. Risk factors that
lead to a heart attack are somking, hypertension, diabetes mellitus, high fat diet, high
blood cholesterol levels, obesity, male gender, age over 65,and heredity. A personal
or famile history of coronary artery disease, cerebrovascular disease, peripheral
vascular disease, angina, or kidney failure may indicate increased factors leading to a
heart attack. Occasionally an overwhelming amount of stress can lead to a heart
attack. In older older people straining to have a bowel movement can be a risk factor.
The cardinal symptom to a heart attack is chest pain, but in some cases when you are
older or a diabetic chest pain may not be present. Other sympoms may include
weakness, shortness of breath, nausea, or vomiting. Heart attacks occur in
approximately every 0 out of 1,000 people per year, which is a major cause to
sudden death in adults. Symptoms include chest pain below the sternum, back pain,
abdominal pain which may radiate to the chest, arms,shoulder, to the neck, teetch,
jaw,and to the back this pain is prolonged for more than 0 minutes which is relieved
by rest or nitroglycerin, shortness of breath which may or may not be occumpanied
by pain, sough, lightheadedness - dizzyness, fainting, nausea, vomiting, sweating dry
mouth, feeling of "impending doom", anxiety, seizures, fatigue, blood pressure low,
and unusual or strange behavior. The following tests are performed to see what
damage was done coronary anginography, nuclear ventricularography,
echocardiography, treadmill, LDH, LDH isoenzymes, CPK, CPK isoenzymes,
adolase, apolipoprotein B100, apolipoprotein Cll, AST, BUN, chem-0, cholesterol
test, heart MRI, lipids serum, myoglobin serum,and myoglobin urine. Treament for
the attack is very detailed. Hospitilazation is usualy required for a period of 1 to 14
days. Treatment may include the need for intensive care and may involve emergency
surgery. ECG monitorin is begun immedately because the life threating
dysrhymthmias are the leading cause of death in the first few hours after a heart
attack. The goal of treatment is to decrease the demands of the heart so that it can
heal. Activitymay be restricted initally, then gradually increased. An intravenous
catheter will be inserted to administer emergency medications and fluids. Additional
invasive monitering devices may be used based on over all status. An urinary catheter
may be inserted to monitor fluid status. Oxygen is usuall given if blood oxygen levels
are normal. This makes the oxygen readily available to the tissues and the body o
reduce the workload of the heart. A diet may be or not be restricted according to
weight of the person. If a diet is resticted low salt intake, no caffine and low fat diet
are ofter issued. There are a few medications to help with a heart attack. Morphine is
the analgesic most often given for pain. Nitrates such as nitroglycerin are given for
pain to reduce the oxygen requirements of the heart. Beta - blockers (metoprolol and
atenolol) reduce the workload of the heart. Digitalis improves the heart's pumping
action. Calcium channel blockers reduce oxygen requirements in the heart muscle.
Anti-arrhythmics and diuretics may also be perscribed. Some therapy may include
Thrombolytic (clot-dissolving) therapy. This is usually initiated within 6 hours of the
chest pain. Initial therapy consists IV infusion of thrombloytic medication
immedately followed by n IV infusion or heparin. Heparin therapy will last for 48 to
7 hours. Oral aspirin and warfarin may be prescribed to prevent further
developments of clots.Possible complications of thrombolytic include bleeding and
hemorrhage. Surgical interventions may be necessary. Emergency angioplasty may
be required to open blocked coronary arteries. Emergency coronary artery bypass
(CABG) may be required. The expected outcome varies with the location of the
damaged tissue. Damage to the electrical conduction system (yhe impulses that guide
heart contraction) worsens the outcome, Approximately 1/ cases are fatal. If the
victim is alive after hours of the attack the chance for survival is good, but may
include complications. Heart attacks are not necessarily disabling and the person
usually can gradually resume a normal lifestyle. There are some complications
though arrhythmias such as ventrical tachycardia, ventricular fibrillation, heart
blocks, congestive heart failure, extension of the amount of affected heart tissue, and
pericarditis. Control cardiac risk factor whenever possible. Control blood pressure
and total cholesterol levels, reduce or avoid smoking, modify diet (increase high
density lipoproteins and decrease low density lipoproteins) if necessary, conrtol
diabetes, and lose weight if obese. Follow an exercise program to improve
cardiovascular fitness.
Arteriosclerosis commonly called hardening of the arteries includeds a variety
of conditions in which artery walls thicken and lose elasticity. Heredity seems to play
a role in the development of the disease, and there is evidence that a high cholesterol
level in the blood can lead to this disease.
Hypertension is the force of the blood being pumped through the arteries
exerts pressure on the arterial walls. When this pressure is too high it is an unhealthy
pressure. If left untreated it overworks the heart and can lead to heart attack, storke,
kidney disease, of other ilnesses.
Rheumatic fever causes inflammation of the body tissues, joints ,and heart,
All heart tissues can be affected, but the heatr's valves are most often damaged.
Antibiotics can lessen the adverse effects of rheumatic fever and prevent serious heart damage.
Bacterial endocarditis is a bacterial infection of the inner lining of the heart
muscle. More than half of the incidents of bacterial endocarditis are a result of
rheumatic fever.
Congential heart disease is heart disease present at birth. It ranges from minor
heart murmurs that require no treatment to fatal structural defects.
In a normal healthy heart the muscle contract and relax in an orderly manner,
buth this rhythmic pulsing can be disturbed. Ventricular fibrillation rapid,
uncordinated contactions of the heart is on of the most serious disturbances of the
heart, this can lead to arrest or death. Other ryhthmic disorders include auricular
fibrillation and flutter, tachycardia, and bradycardia.
Congetive heart failure occurs when encouragement of the veins prevents the
heart muscle from being able to pump forcefully enough to deliver an adequate
supply of blood to the body. It can be caused by disease of either the heart muscle or the valves.
The heart is the bodies way to survive. Without the heart in perfect working
conditon a person will always not function right. The heart needs plent of exercise to
stay fit so it will have a lesser chance of having a defect in life. Everyone must realize
that how important it is to have a very balanced diet and to follow routines to
exercise the heart daily. Routine checkups should be followed to see how everything
is going, as you get older you should go more frequently
Please note that this sample paper on The Human Heart is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on The Human Heart, we are here to assist you. Your cheap custom college paper on The Human Heart will be written from scratch, so you do not have to worry about its originality.
Order your authentic assignment and you will be amazed at how easy it is to complete a quality custom paper within the shortest time possible!
