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Stels [109]
1 year ago
5

The common atrium is subdivided into a left and right atrium by an interatrial septum, which consists of two parts: the septum a

nd the septum that partially overlap.
Biology
1 answer:
Gelneren [198K]1 year ago
8 0

The common atrium is subdivided into a left and right atrium by an interatrial septum, which consists of two parts: the septum primum and the septum secundum that partially overlap.

What is septum primum and septum secundum?

  • The septum primum, which divides the right from the left, is a structure inside the primitive atrium.
  • In the direction of the endocardial cushions, this septum descends.
  • The foramen primum, a hole in this septum, keeps the blood flowing through the heart.
  • The foramen secundum develops as the foramen primum shrinks in size.

What is the purpose of septum secundum?

  • A muscular flap called the septum secundum plays a significant role in heart growth.
  • It has a semi-lunar form and develops from the atrium's upper wall to the right of the septum primum and ostium secundum.
  • It is crucial for the foramen ovale to close after birth.

Learn more about septum secundum

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<u>The correct question is -</u>

The common atrium is subdivided into a left and right atrium by an interatrial septum, which consists of two parts: the septum ______ and the septum ______ that partially overlap.

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