Sandbox: Ifeoma: Difference between revisions
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*At about week 4 of pregnancy, the septum primum and septum secundum forms to divide the primordial single atrium into right and left. | *At about week 4 of pregnancy, the septum primum and septum secundum forms to divide the primordial single atrium into right and left. | ||
*The crescent-shaped septum primum grows from primordial atrial roof towards the endocardial cushion. This partially divides the common atrium into left and right halves. | *The crescent-shaped septum primum grows from primordial atrial roof towards the endocardial cushion. This partially divides the common atrium into left and right halves. | ||
*The formation of the endocardial cushions occurs on the ventral and dorsal walls of the atrioventricular canal. The fusion divides the atrioventricular canal into right and left sides. | |||
Revision as of 17:27, 19 December 2019
Embryology
- At about week 4 of pregnancy, the septum primum and septum secundum forms to divide the primordial single atrium into right and left.
- The crescent-shaped septum primum grows from primordial atrial roof towards the endocardial cushion. This partially divides the common atrium into left and right halves.
- The formation of the endocardial cushions occurs on the ventral and dorsal walls of the atrioventricular canal. The fusion divides the atrioventricular canal into right and left sides.