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Respiration and Circulation — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYRespiration and Circulation4 Marks
Question
Distinguish between : Atria and Ventricles.
✓

Answer

AtriaVentricles
1. Atria are upper chambers of the heart.1. Ventricles are lower chambers of the heart.
2. Atria are thin walled.2. Ventricles are thick walled.
3. Atria are receiving chambers.3. Ventricles are distributing chambers.
4. Interatrial septum divides the two auricles (atria).4. Interventricular septum divides the two ventricles.
5. Right atrium is larger in size than left atrium.5. Left ventricle is larger in size than the right ventricle.

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