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Premature Ventricular Contractions
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∙ 13y ago
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Which side of the heart does blood go in to?
Both! Blood enters the atria (upper chambers) on both sides of the heart at the same time. Blood from the body, carrying carbon dioxide, enters the right atrium. Blood from the lungs, carrying oxygen, enters the left atrium. The two atria contract together, pumping the blood into the two ventricles (lower chambers). The ventricles then contract, pumping blood out of the heart. Blood from the right ventricle goes to the lungs, where it loses its carbon dioxide and picks up oxygen. It then goes to the left atrium. Blood from the left ventricle goes to the body, where it delivers oxygen and picks up carbon dioxide. See: http://www.bbc.co.uk/science/humanbody/body/factfiles/heart/heart.shtml
Do your respiratory muscles contract each time you exhale?
Yes
SA node versus AV node?
1) Sino-atrial node is master node and atrio-ventricular node is on the path from SA node to impulse to ventricles. 2) SA node has intrinsic rhythme rate of about 72 beats/ minute and AV has intrinsic rhythme rate of about 50 beats per minute. 3) SA node has autonomic ( sympathetic and parasympathetic ) nerve supply and AV node do not have any such supply. 4) SA node regulates the heart rate and AV node slows down the conduction across the path, so that atria gets time to contract, to be fallowed by contraction of ventricles. 5) Disease of the SA node generally leads to sick sinus syndrome. Disease of the AV node generally leads to atrioventricular block.
What is Purpose of a scheduler?
A scheduler is to help you plan things out ahead, such as to go where at what time. It makes life much easier.
The time period between cell division is called?
The time period between cell divisions is called interphase. ;)
What do both atria do at the same time?
They both contract at the same time.
What two chambers contract last in the heart?
During diastole the atria fills with blood.
Which part of the heart delays the electrical impulse to allow for atrial emptying of blood before ventricular contraction?
The AV node slows down the impulse giving the atria time to contract before the ventricles contract.
What do the atria do at the same time?
Both atria open and close simultaneously.
The heart is made up of cardiac muscles what happend when these muscles contract?
Yes, the heart is made of muscles, however, these muscles do not all contract at one time. They contract in synchrony and when they contract they squeeze the chamber they surround such are the atria or ventricle and blood is pushed out of the chamber.
Blood is forced into the blank each time the blank contract?
Blood is forced into the ventricles each time the atria contact. *do you go to Smith Language Academy because we had the same question on our extra-credit. :-)
If the atrioventricular node could be surgically removed from the heart without disrupting signal transmission to the Purkinje fibers what would be the effect?
Atria and ventricles would contract at about the same time.
What are AV nodes?
AV node is biologically an inhibitor of the conduction across the atrium to ventricles. The conduction of impulse is delayed across the AV node. This buys time for the atria to contract, to be fallowed by ventricles.
What is a contract to keep an offer open for a specific period of time called?
This is know as an option contract.
A company did not inform me ahead of time that I was to be charged for services and then they sent me to collections. Do they have to have a signed contract showing an agreement for this to be valid?
um yes?
What are AV nodes biologically?
AV node is biologically an inhibitor of the conduction across the atrium to ventricles. The conduction of impulse is delayed across the AV node. This buys time for the atria to contract, to be fallowed by ventricles.
What is it called when you lay out your ingredients ahead of time?
Preparation, I'm guessing.
