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The Heart's own pace maker
The heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
What else can I help you with?
Flaps of connective tissue called valves are located between the atria and the ventricles?
TRUE
Are auricles extensions of the atria or the ventricle?
The are extentions of the Atria.
The upper chambers of the heart are called what?
The left and right atrium (or atria).
What is the organ that has two atria and one ventricle in a frog?
The heart is the organ that has two atria and one ventricle.
Why do he atria appear collapsed on a preserved specimen?
Because there is no blood/pressure within the atria to keep it open
Is the atria of the heart located superiorly?
Yes, the atria are the superior chambers of the heart.
Where are the anterooms of the heart located?
The "anterooms" of the heart are also known as the atria.
Where are the atria located What is their function and characteristics?
it is located in the heartThe Atria (plural) or Atrium (singular) are the chambers located in the top of the heart. Below the Atria are the Ventricles.There are two atria in the heart, the left atrium and the right atrium.Atria are located in the heart.
Where is the electrical conduction of the atria located?
Purkinje fibers
Tricuspid valve were is it located?
The tricuspid valve is located between the right atria and ventricle.
The atria of the heart are the chambers that are?
located superiorly and are the receiving chambers of the heart
How many atria does the cat heart have?
Felines have two atria in their hearts. Located on either side of the organ, they are called the right atrium and the left atrium.
Flaps of connective tissue called valves are located between the atria and the ventricles?
TRUE
Are auricles extensions of the atria or the ventricle?
The are extentions of the Atria.
What is the downstairs chamber in the heart?
the atria
What system has the atria?
The atria are a part of your heart which is in the circulatory system
What node sends out electrical impulses that spreads out all over the atria?
The sinoatrial (SA) node, located in the right atrium of the heart, is responsible for generating electrical impulses that spread out and stimulate the atria to contract.
