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Q: When does the blood-brain barrier close as a newborn?
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What areThe cells of the nervous system that form the bloodbrain barrier that keeps certain substances from gaining access to the brain are called?

astrocytes


The neuroglia glial cell that helps main bloodbrain barries is?

Astrocytes.


How close to the ground is the Great Barrier Reef?

It is underwater. So it is not close to the ground.


How close is the Great Barrier Reef to Australia?

The Great Barrier Reef is very close to the Queensland coastline. It is easily accessed from various points along the northern coast.


What are some examples of barrier islands?

A barrier island is an island close to, and parallel to, the main coastline.


What are racial barrier?

ethnic barrier. it is something that makes the 2 or more groups not close to each other. this is because of their differences in their culture.


Weight of newborn child?

The weight of a newborn depends on if they are premature or not, but I would say if they are born close to the estimated due date they will weigh anywhere from 6-8 pounds.


When One door opens Nine doors close When Nine doors close One door opens what does this riddle means?

The orifices of a newborn


Do you hear a sonic boom when an object breaks the sound barrier?

Yes, if you're close by


How does the mother hen lookafter the newborn?

She keeps them close and brings them small bugs to eat. Prefferably ticks.


How was the ocean a barrier and roadway to the discovery of the Americas?

The oceans on both sides of the country were a barrier because most land on the other hemisphere is joined or very close. The were a roadway because they allowed Columbus to discover the Americas.


How was the ocean a barrier and roadways to the discovery of the Americas?

The oceans on both sides of the country were a barrier because most land on the other hemisphere is joined or very close. The were a roadway because they allowed Columbus to discover the Americas.