10/30 - Heart Chambers - Right Atrium

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15 Terms

1
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Auricle

What is the term for the ear-like appendage of the atria that expands the atrial capacity?

2
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mitral/bicuspid

What are the two alternate terms for the left atrioventricular valve?

3
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Tricuspid

What is the alternate name for the right atrioventricular valve?

4
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left semilunar

What is the alternate name for the aortic valve between the left ventricle and aorta?

5
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right semilunar

What is the alternate name for the pulmonary valve between the right ventricle and pulmonary artery?

6
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Right atrium

Which chamber of the heart is in the most dorsocranial section of the base of the heart and receives deoxygenated blood from the vena cavas and coronary sinus?

7
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Interatrial septum

What is the term for the tissue that divides the atria into left and right chambers?

8
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Sinus venarum, right auricle

What are the two sections/chambers within the right atrium?

9
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Sinus venarum

Which chamber within the right atrium is the main space in the chamber?

10
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Coronary sinus

Which opening in the right atrium is ventral to the opening of the vena cava and conducts venous return for most of the blood vessels of the heart?

11
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Right AV orifice

What is the term for the opening in the right atrium that allows blood to flow into the right ventricle? It is blocked by the tricuspid/right AV valve.

12
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Fossa ovalis

What is the term for the tissue/indentation in the right atrium which is formed as the foramen ovale closes after birth and is caudal to the intravenous tubercle?

13
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Foramen ovale

The fossa ovalis is the remnant of what structure in the fetal heart which allows blood to bypass the pulmonary circuit and flow directly from the right to left atrium?

14
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Pectinate muscles

What is the term for the interlacing muscular bands on the internal surface of the right auricle wall and main atrial wall which gives strength to the right auricle during atrial systole?

15
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caudal/cranial vena cava, coronary sinus, right av orifice

What are the four opening which conduct blood into and out of the right atrium in a non-fetal heart?