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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
Where is the heart located and why?
Heart is located in the thoracic cavity. Heart remain safe in rib cage.
What can help people with heart attacks?
Mostly the panic a person feels. If the person panics your heart rate jumps up. Also the fact that your heart can't get the oxygen where it needs to. So the heart pumps harder and faster to do its job.
How person feel when experience a heart attack?
It varies with the person. Personally, the first thing I noticed was my left arm aching. The ache you feel when you get extremely cold. Nothing in the chest. Thought it was just a muscle ache. 10 minutes later, I started sweating and had a slight tremor in my whole body. Figured what it was, drove to the hospital, walked in and when they asked what I wanted, I calmly told them Oh I'm having a heart attack. No point in getting excited about it. Some people feel very little and some say an elephant is sitting on their chest.
Is a rabbit heart supposed to be beating fast?
Yes, all living things have a heart. It is a necessary organ needed for anything to pump blood throughout the body.
Where does blood goes after leaving the lungs?
Oxygenated blood leaves the lungs and returns to the heart via pulmonary veins to be pumped throughout the body.
Would a heart flutter mean heart problems?
It's certainly something that's potentially concerning.
Another term for heart flutter is PALPITATION. It is the subjective feeling and awareness of one's heart beat. It can be slow, regular or fast. It can be regular or irregular. And most important, it can be sustained or terminate on its own.
In older adults, Atrial fibrillation is the most common condition diagnosed when palpitations are associated with general and cardiovascular symptoms such as chest pain, shortness of breath, palpitations and fatigue.
In younger people, anxiety or panic attacks are more common, but arrhythmias (abnormal heart rhythms) are also common. Overactive thyroid is another common cause and easily uncovered by a blood test.
It is true that certain drugs, legal and illegal cause heart fluttering. Cocaine and amphetamine ("speed") often cause the abuser palpitations. Cold remedies that contain decongestants (phenylephrine or pseudoephedrine) also lead to palpitations.
Many prescription drugs are not tolerated well and cause palpitations.
If you experience SUSTAINED (longer than a few minutes, not just a couple of seconds like when surprised) palpitations, see your doctor immediately. While a heart problem is suspected, often fixing the offending reason (drug or condition) will solve the problem.
The most dangerous and serious outcomes of palpitations from a cardiac cause include stroke, heart attack and death, so getting diagnosed and treated quickly is paramount.
Some heart "flutters" are far less serious than others. Your physician should be sure to differentiate a benign one from a potentially serious one by performing EKG's.
How blood flows from left ventricle to left ovary and back to left ventricle of the heart?
Blood leaves the left ventricle and passes through the aorta to circulate to the rest of the body. This blood then returns to the heart from the body via the veins, and is pumped via the right atrium into the right ventricle. From here it is pumped to the lungs.
Why is the left side of a heart bigger than the other side?
Its not. The heart is located in the center of the thorax directly behind the sternum. the reason it is often though to be on the left hand side is that the left ventricle is considerably bigger than the right and so sits a little further to the left than the right does to the right.
Membrane that covers the heart?
The membrane surrounding the heart is called the pericardium. It is a fluid sac that serves several purposes. One of the purposes of the pericardium is it contains the heart in the chest cavity. The pericardium also prevents the heart from overexpanding when the blood volume in the heart increases.
How does exercise affect cardiac output?
The human heart is an involuntary muscle that consists of four chambers: two atria and two ventricles. Its function is to transport oxygen-rich blood throughout the body via the circulatory system, nourishing and energizing living cells. Like any other muscle, the heart can be strengthened with exercise or weakened by a lack of physical activity.
Cardiac output is a function of stroke volume and heart rate. An individual's cardiac output can be determined by measuring the total volume of blood that is pumped by a heart ventricle (stroke volume) each time the heart beats (heart rate). The stroke volume multiplied by the heart rate equals cardiac output.
A simple mathematical equation is used to calculate the cardiac output of the heart, measured in milliliters per minute.
Cardiac Output in mL/min = heart rate (beats/min) X stroke volume (mL/beat)
An increase in stroke volume or heart rate of any intensity increases cardiac output.
What does the circulatory system look like?
An abnormal heart murmur may have an enlarged heart compared to one without
Where is the blood in the heart going to?
Blood goes into the right side of the heart from the body then pumped to the lungs for purification( this is when oxygen is mixed with haemoglobin( a substance in the body) to make the blood cleaned, it is then pumped to the left side of the heart were it is transported to every part of the body, then the circulation starts all over again.............
How long can you live with liver failure?
there really isnt a date. one your liver fails and you dont get another from a donner or family member then u have a slim chance of living and you die because you liver flushes out waste and thats why its importnant to drink water all the time and not to drink alot of alcohol esspecailly not at one time
What does your heart do when your heart rate increase?
The heart rate increases because of your bodies cells need more oxygen during activity. Nerves in the heart make the pacemakers fire electrical impulses faster because they release epinephrine and neropinephrine and thus the heart rate increases.
Do the heart valves open at the same time?
>Yes
No they do not.
Left ventricle contracts before the right. (From the correct anatomical position.)
That makes sense because the left ventricle has more work to do, systemic vs. pulmonary.
http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_electrical.html
Well guess what. This website is not entirely correct. Sometimes things are interpreted half right. What you want to focus on here from the EKG is the QRS complex. This is the depolarization and repolarization of the ventricles (not as they explained the firing of the left, then right ventricles). In general, you will say that the atria contract together and then the ventricles contract together. When you start splitting hairs, you can justify tiny differences in milliseconds, etc. Also, keep in mind that the left ventricle provides a much stronger contraction since it is sending out the blood to the systemic circuit, while the right goes out to the pulmonary circuit.
What does the heart do with blood?
The heart itself performs no changes to the blood, (with the exception of removing some of the oxygen through diffusion, for the heart to use in its respiration).
Its role is simply to pump the blood through both the pulmonary circulatory system and the main circulatory system.
Does your heart beat fast when you do sports?
Yes it absolutely does. So many a times I keep my head cool :)
There are many causes. Some of them are: ---- ARTHERIOSCLEROISIS ---- CORONARY ARTERY DISEASE
What fetal shunt bypasses the lungs by directly connecting the right atrium and the left atrium?
In the fetal heart, the foramen ovale (or ostium secundum of Born) allows blood to enter the left atrium from the right atrium. It is one of two shunts, the other being the ductus arteriosus, that allows blood entering the right atrium to bypass the pulmonary circulation. Another similar adaptation in the fetus is the ductus venosus. In most individuals, the foramen ovale (pronounced /fɒˈreɪmÉ™n oʊˈvÉ‘Ëli/) closes at birth. It later forms the fossa ovalis. Source: http://en.wikipedia.org/wiki/Foramen_ovale_(heart) In the fetal heart, the foramen ovale (or ostium secundum of Born) allows blood to enter the left atrium from the right atrium. It is one of two shunts, the other being the ductus arteriosus, that allows blood entering the right atrium to bypass the pulmonary circulation. Another similar adaptation in the fetus is the ductus venosus. In most individuals, the foramen ovale (pronounced /fɒˈreɪmÉ™n oʊˈvÉ‘Ëli/) closes at birth. It later forms the fossa ovalis. Source: http://en.wikipedia.org/wiki/Foramen_ovale_(heart)
i think what you mean is what happens if your body has an inadequate supply of blood
simple the brain and other essential organs do not get enough oxygen from that oxygen rich blood and nowhere to dump not-needed carbon dioxide so your organs shut down and your brain cannot function because it dosent have enough oxygen to work
