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Atrium

Atrium

(Science: anatomy) a chamber, used in anatomical nomenclature to designate a chamber affording entrance to another structure or organ. Usually used alone to designate an atrium of the heart.

Origin: L., gr. Atrion = hall Any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart).The central area in a building; open to the sky.A chamber found in the heart that receives deoxygenated blood from the body.


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Re: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?

Mith, I've explored that option. There are some that believe that it is a remnant of the ductus arteriosus, but animals like opossums never have an ductus arteriosus and have the same setup for venous return...

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by phuturephysician
Sun Feb 01, 2009 8:47 pm
 
Forum: Human Biology
Topic: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?
Replies: 8
Views: 1080

Re: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?

Yes, this is the human heart. Bronchial circulation (feeding the lungs themselves) does indeed dump deoxygenated blood into the left atrium. I know that this is not a significant issue, it just makes me curious. I have found no real answers to explain this.

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by phuturephysician
Fri Jan 30, 2009 6:42 pm
 
Forum: Human Biology
Topic: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?
Replies: 8
Views: 1080

Why bronchial circ. dumps deoxygenated blood in2 L. atrium?

In human heart, oxygenated blood goes into left atrium by vena pulmonalis, but deoxygenated blood comes into R atrium, then goes into R ventricle, and finally leaves heart going through arteria pulmonalis. In Chondrychthyes and Osteichthyes(fishes), ...

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by miloshic
Fri Jan 30, 2009 2:16 pm
 
Forum: Human Biology
Topic: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?
Replies: 8
Views: 1080

Re: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?

Deoxygenated blood is being pumped into the left atrium which contains oxygenated blood. Mixing deoxygenated blood with oxygenated blood doesn't seem logical. I know that this amount of deoxygenated blood from the bronchial circulation is a small ...

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by phuturephysician
Thu Jan 29, 2009 10:29 pm
 
Forum: Human Biology
Topic: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?
Replies: 8
Views: 1080

Why bronchial circ. dumps deoxygenated blood in2 L. atrium?

... I have searched extensively for this answer and I am having no luck. Why does the bronchial circulation dump deoxygenated blood into the left atrium? Thanks. Hope you can help.

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by phuturephysician
Thu Jan 29, 2009 8:09 pm
 
Forum: Human Biology
Topic: Why bronchial circ. dumps deoxygenated blood in2 L. atrium?
Replies: 8
Views: 1080
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