Heart

The Coronary arteries carry blood to the heart so the heart has its own supply of oxygen and nutrients to perform its function.

The closure of the atrioventricular valves causes the first heart sound. We hear this as the "lub" of the "lub DUB" heart beat.

cardiac output

the av bundle (aka Bundle of His (pronounced like 'hiss'))

Good Question! Well, What influences the amount of blood that leaves the heart is a Right and Left Artetery called a Ariticule. The blood is squirted out of these valves, and into the Veins of your body, Though whats known as the Aorta.

In the chest cavity positioned to the left from the center of the body.

The pericardial

fluid acts as a lubricant and reduces friction between the opposing surfaces as the heart beats (contacts). The pericardial

fluid is secreted by the pericardial

membranes.

The brain can influence the heart in two ways. Sympathetic and parasympathetic stimulation.

Parasympathetic stimulation of the heart is through the vagus nerve.

Sympathetic stimulation of the heart is via cervical and thoracic splanchnic nerves.

The heart has its own pacemaker cells, so the brain only changes the rate and contractility of the heart.

Folding panel partitions exceeding 45' high and 300' long

Normally people feel pain in their LEFT arm.

But heart attacks effect all different people differently.

Some may not feel pains in arms, some may feel pain in both arms, and I'm sure even tho it may only be a very few that only feel pain in the right arm.

Nicotine should increase the heart rate, as it stimulates the release of adrenalin and noradrenalin, a chemical very similar to adrenalin. Not sure if it can also decrease the heart rate.

The left ventricle is thicker and stronger than the atrium because the left ventricle allows the arteries to rum through it. The arteries have thick cellular walls so they are bigger. The arteries do not run through the atrium.

The electrical impulse in the heart begins in the sinoatrial (SA) node and travels across the walls of the right atrium to the atrioventricular (AV) node. WHie the impulse travels the atria have time to contract. Once the impulse hits the AV node the signal is transmitted to the Bundle of His (AV bundle) and then on the the intraventricular fibers (purkinje fibers) in the septum and the outer chamber walls of the heart . This results in a simultaneous ventricular contraction.

Yes, heart lies superficially and more like centrally, over the diaphragm.

When the thoracic cavity is opened and the heart is compressed manually with your hands. Also known as internal massage.

For the most part, yes. Your bpm ([heart] beats per minute) is how your heart beat is usually measured. A resting heart rate lower than about 72 bpm is considered healthy. You can lower your bpm by exercising regularly.

However, a heart beat of 0 bpm means your dead, which isn't healthy.

relating to the force if the blood going through the heart?

The open gap which connects the left and right atria of the heart in a fetus. The fetus' pulmonary artery isn't used as it doesn't breathe in air and so when blood is pumped around it's heart it bypasses the pulmonary artery which would normally pump blood to the lungs.

Pulmonary veins are oxygen rich and deliver it along with nutrients to the body's organs, after the blood has delivered the goods then it is drained back to the heart by the arteries. Then the blood is carried back to the lungs to the alveoli for gas exchange leave carbon dioxide we breathe out and pick up new oxygen and starts over again.

Blood flow goes as follows:

1. left atrium

2. mitral (bicuspid) valve

3. left ventricle

4. aortic semilunar valve

5. aorta

6. brachiocephalic trunk

7. common carotid arteries

8. internal carotid artery

9. anterior and middle cerebral arteries

10. Circle of Willis

11. venous sinuses internal jugular vein

12. right brachiocephalic vein

13. superior vena cava

14. right atrium

15. tricuspid valve

16. right ventricle

17. pulmonary semilunar valve

18. pulmonary trunk

19. pulmonary artery

(Please leave personal comments on the discussion pages.)

It depends. Your heart can beat fast as a kid and get slower as you grow old.

Blood being pumped out of your circulatory system and into your chest cavity

The right ventricle just receive the blood and pump it into the lungs only, but the left ventricle pump the blood to all round the body, to do the ventricle wall is more thicker, that's why the left ventricle have thicker wall.....

Hope I helped you!!

(Ivy Yumi Y)

1st of all go to a Dr and get it assessed... if it is fluttering all the time it could be a very dangerous rhythm. A Dr will know what to do. You need a heart monitor to assess the rhythm, then if it is indeed "fluttering" medications and/or a procedure known as ablation either radio or cryo could resolve it.

through the interventricular foramina