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Cellular junctions that allow for small molecules like ions to pass between cells are:

When red blood cells are put into a solution, they swell over time and some burst. With this information, you can conclude the solution is ______.

The optimal time to perform a complete fetal echocardiogram is __________ weeks.

What is the caudal region of the primitive heart called?

Click the area of the septum secundum.

Blood pressure in the _____ becomes higher than that in the ______ in neonatal circulation. 

Click true; this is where I will add in your points for your handwritten fetal circulation question. 

A piece of the ____________________ acts as a flap at the level of the foramen ovale and controls the blood flow between the two atria. 

Put the following in chronological order:

The major development of the fetal heart is completed by the end of week _____.