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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 Feathered Hearts in Mayer Arizona located?

The address of the Feathered Hearts is: 17214 E Bob White Rd, Mayer, AZ 86333-4228

What is the heart an approximate size of?

The heart is about the size of the person's fist.

What is desmodromic valve?

In spring valve trains the cams on the camshaft are used to open the valve and keep the valve from being closed too soon, but the valve is pulled closed by a spring.

In a desmodromic system a 'rocker arm' is fitted around the cam in a manner to both open and close the valve directly rather than relying on another system, such as a spring to close it. In that manner the cam completely opens and closes the valve, rather than just opening it.

The largest user of the technology is Ducati in (as far as I'm aware) all of their production motorcycles.

Fabio Taglioni developed it because at the time spring valves had problems at higher revolutions. The springs were prone to breaking, and you could get valve float, where the springs couldn't pull the valve closed fast enough before the spark and ignition of the fuel in the chamber ocured, meaning lost power through escaped gases and potential engine damage if the the piston collided with the still-open valve head.

At least that's how I understand it. Wikipedia has a pretty thorough article, though I think it could be cited more and cleaned up a lot.. a lot like my explanation I guess =p.

Is the atria of the heart located superiorly?

Yes, the atria are the superior chambers of the heart.

Can the fluids in the lungs be drained in a case of heart failure?

That is not possible. The fluid is collected in millions of very small air spaces.

Do ventricles contract from the heart?

Yes. The ventricles are part of the heart, they are the two lower chambers which pump blood around the body by contracting. The right ventricle pumps blood to the lungs and the left ventricle pumps blood to the rest of the body.

What if your sister hurt you and then you hurt her in the heart?

you get in big trouble and she starts fake crying and when your parents arnt looking she stickes her toung out at you

Is the heart size can decrease?

When you are a baby, the heart is small. When you grow up, it get's bigger.

What is AV nodal delay?

AV node is responsible for the delayin transmission of impulse generated in the SA node.This delay of impulse transmissions is called AV nodal delay. It is about 0.09 sec.

Causes of AV nodal delay

i. Junctional fibres of the AV node are very small in size.

ii. Prolonged refractory periodof AV node.

Hearing and feeling your heart fluttering?

I am a 47 year old woman and 2 years ago I would periodically feel "flutters" in my heart. I had it checked out by a cardiologist and found I had a 95% blockage in a major artery to my heart. If you feel flutters, go to your doctor -- I don't think it's normal.

What is the function of the third ventricle?

The third ventricle is involved in several functions of the body including:

  • Protection of the Brain From Trauma
  • Pathway for the Circulation of Cerebrospinal Fluid

What is the plural form for atrium?

The plural form of the word atrium is atria. The atria are the two upper cavities of the heart from which blood is passed to the ventricles.

Does venous in venous Doppler get capitalized?

No. Venous is simply a modifier to the brand name Doppler.

What is a STEMI?

A STEMI (ST-elevation myocardial infarction) is the deadliest type of heart attack requiring immediate emergency attention. In a STEMI, the coronary artery supplying the heart with blood is blocked, leaving part of the heart unable to receive blood. A STEMI is diagnosed with the use of an EKG (electrocardiogram). If a patient is found to have a STEMI, the patient will require immediate emergency revascularization of the heart, either through the use of clot busting medication or with the use of catheters to mechanically open up the artery.

Do premature atrial contractions suggest heart disease?

Generally no they do not indicate any heart disease nor are they even really considered abnormal to find and usually no treatment is prescribed. If they are chronic you should consult a medical profession to discuss if any treatment is neccessary.

What can cause heart flutters at night?

I just went to the doctors for this exact same issue. 1st you will want to check your blood pressure and ensure it's in a safe range. As a preventative measure, have EKG and any other heart tests covered by insurance or that you can afford. In the meantime, stop drinking caffeine and limit salt.

Also make sure your thyroid is not the issue of this problem. Research on www.about.com for Hypothyroidism/Hashimoto's/Hyperthyroidism. Women have thyroid issues more commonly than men, but make sure yours is working correctly!