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Heart
The heart is a major organ of the body that is found in the circulatory system. It pumps blood throughout the blood vessels. Questions related to the heart should be put here.
8,781 Questions
Is it normal for an 8 year old to have an irregular heart rate?
Any irregularity of the heart (arrhythmia) should be reported to the doctor or pediatrician. Although is may be just a normal occurrence, much more serious causes such as heart disease or cardiac conditions may be present in the baby. Other common causes of arrhythmia include dysfunction of the sinoatrial node (the node that sends electrical impulses to make the heart beat) and ventricular tachycardia or fibrillation a serious condition which causes the patient to go into cardiac arrest.
As a safety precaution, it is my recommendation that they be seen by a qualified medical practitioner and get evaluated.
Does olives helps prevent heart attack?
There are many scientific studies that suggest that olive oil helps prevent and treat heart disease. Studies have shown that olive oil offers protection against heart disease by controlling LDL ("bad") cholesterol levels while raising HDL ("good" cholesterol) levels. No other naturally produced oil has as high as a percentage of mono-unsaturated fat as olive oil. It appears that people who consumed 23ml - about 2 tablespoons - of virgin olive oil daily showed less oxidation of LDL cholesterol and higher levels of anti-oxidant compounds, particularly phenols, in the blood. But while all types of olive oil are sources of mono-unsaturated fat, extra virgin olive oil (and especially the higher quality ones) contains higher levels of anti-oxidants, particularly vitamin E and phenols, because it is less processed.
On the other hand, olive oil is 100% fat. (Read the label.) One tablespoon of olive oil contains 120 calories and of those, 120 calories are from fat. Whole olives do not fare much better calorie wise, but at least the meager trace nutrients have not been discarded.
If you want to reduce heart attack risk, you won't do it by adding more fat from olive oil. You must reduce fat (especially animal fat) and then replace what is left with fats from sources like olive oil, nuts and seeds.
When "studies show," the question is whether they show a consequence that results from "adding" or "replacing" or "restricting to" a type of food. Obviously, replacing bad stuff is going to work a lot better than keeping it while taking in additional foods.
What organ in the heart where pulmonary circulation is started?
Your right side of the heart pumps blood in the pulmonary circulation. The pulmonary circulation should start from the origin of the pulmonary aorta.
What do the Chambers of the heart do?
There are four chambers in a human heart. All serve to pump blood, but each has a specific purpose.
The chambers are divided into 2 atria (upper chambers) and 2 ventricles (lower chambers), and also can be divided into a left and right side.
The ventricles do most of the "work" and move most of the blood. As such, they are bigger, thicker, and more muscular. The right ventricle pumps blood from the heart to the lungs and back to the heart. The left ventricle pumps blood from the heart to the rest of the body - your brain, liver, kidneys, and other organs, as well as your arms, legs, face, etc. - and back to the heart.
The atria are "helpers" which help the ventricles to pump more effectively by making sure the ventricles are filled completely before they contract.
there are 4 chambers of the heart. 2 on top and two below. they are called the right and left atruims (the 2 upper ones) and the right and left ventricles (2 lower ones). In order to appreciate how they work, you must go thru the process of oxygenation/circulation of the blood thru the cardio pulmonary system. first, lets say the blood from the body has been depleted with oxygen, it goes in the right atrium thru the superior or inferior vena cava (theyre like hiways which carry the blood to the heart....SVC carries the blood from the upper body and the IVC carries the blood from the lower body)
so, from the right atrum (which is like a containing area for all unoxygenated blod, it pumps it to the right ventricle thru the tricuspid valve (like a door to the right ventricle). when it gets to the right ventricle, it gets pumped again thru the pulmonic valve (which is also like another door) where it gets carried by the pulmonic artery to the lungs for oxygenation.
after being oxygenated by the lungs, there are 4 pulmonary veins that brings the blood back to the heart and the blood enters the left atrium (sort of like a holding area for oxygenated blood) where it gets pumped thru the mitral valve(again, like a door) to the left ventricle wherein it gets pumped (yet again) this time thru the aortic valve (again like a door) to the aorta (which is the largest vessel of the body) that will carry the oxygenated blood to the various parts of the body.
What is the difference between the mind and the heart and soul?
Everything we think is thought in the brain. So, the 'mind' is just our everyday way of saying the 'brain'. Sometimes when we want to talk about feelings, which are a very special kind of thinking, we talk about the 'heart'.
Of course the heart is really only a muscle for pumping blood through the body, but the ancients thought that it was also tied up in some way with our feelings. Since they did not understand physiology, the ancients simply decided that thoughts came from the mind and the heart.
To some, the soul is also an imaginary part of our bodies. Certainly, this is true when we talk of an artist having 'soul'. But, in many religions the soul is also a spirit that forms part of a person and will inhabit an afterlife when the body has died.
The soul is our "higher self", our essence. It is immaterial and feeds off spiritual nourishment. It is where we feel pleasure and where we are, our life almost.
The mind is where we calculate how to receive pleasure, where we make decisions between what is right and wrong and how we live out lives. It is our "self", our consience.
The heart is an organ, it keeps us alive and so is essential to us. It is also the organ that - mythically - governs our feelings. This is in fact false, because we do it with our brain, but there is no denying the fact that it is an important symbological tradition.
Why is the heart in the thoracic cavity?
The thoracic cavity consists of the lungs, heart, liver, stomach and other important squishy organs. the ribcage stops these organs getting damaged if you fall over, for example, which is why the heart's in the thoracic cavity. same reason why the brain's in the skull, for protection.
What are the two large chambers located at the lower end of the heart called?
The two large chambers at the bottom of the heart are the left and right ventricles.
The entire purpose behind the human heart is to pump deoxygenated blood to the lungs to pick up oxygen and oxygenated blood to peripheral tissues to supply them with oxygen.
With no human heart there would be no way to deliver oxygen to cells and get rid of carbon dioxide from them.
What kind of gas does the left atrium carry?
The atrium does not carry gas. Blood flows through it. The blood in the left atrium is oxygenated.
The AV valves open when the blood pressure exerted on their atrial side is greater than that of the ventricle side. This will happen when blood returning to the heart fills the atria and puts pressure against the valve.
A procedure performed with a needle to remove fluid for diagnostic or therapeutic purposes from the tissue covering the heart (pericardial sac).
Which heart chamber is mainly at the base of the heart?
The heart is approximately conical in shape. It is well tilted that its apex is directed forwards, downwards and to the left and the base directed upwards and backwards. The apex is mainly formed by the left ventricle while the base is mainly posterior part of left atrium.
