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The brain and spinal cord, which can be thought of as an extension of the brain stem have a few protective mechanisms. The first is the cerebral spinal fluid (CSF) which is like a cushion that bathes the brain. Also there ia a blood-brain barrier created by special cells that line the blood cappillaries that protect the delicate brain tissues from red blood cells (RBC) and certain chemicals, viruses, and medications. Then there are the meninges. They are layers of protective tissue that wrap around the brain and spinal cord much like our cloths protect our bodoes, the first layer is called pia mater. It means delicate mother, and you can think of this as silk underwear. After that the next layer is like our regular clothing, called the arachnoid mater, or just arachnoid, referring to its web-like structure, much like our cloths are webbed, or woven. The third layer is more like a leather jacket and leather pants. This is the 'tough mother' or dura mater. And finally, the brain and spinal cord is protected by a skeletal encasement, the brain in the cranium and the spinal cord in the vertebrae. Think of this like safety gear such as elbow and knee pads, shin guards, helmet, boots, wrist guards, and gloves. Such a complex system as the brain and spinal cord needs lots of layers of protection. I hope this created a complete picture for you so you can vizualize the layers surrounding the brain and spinal cord.
Wiki User
∙ 16y ago
Wiki User
∙ 10y agoastrocytes
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Are fenestrated capillaries in the brain?
no. continuous capillaries form the blood/brain barrier.
Does the brain have blood cells?
The brain has veins, capillaries, and arteries which contain blood cells.
What is the role of the cells that line the capillaries of the brain?
The cells lining the brain's tiny blood vessels (capillaries) are specifically designed to prevent many substances from passing into brain tissue.
What is formed by a tight network of capillaries?
The blood-brain barrier trust me
The blood-brain barrier shields brain cells from toxins by?
The blood brain barrier (BBB) is composed of a high concentration of endothelial cells in the brain's capillaries, which help to prevent toxins from passing into the brain from the blood supply.
Cappilaries found in?
Capillaries are the smallest blood vessels that supply blood to the organs and muscles of the body, transferring oxygen to and carbon dioxide from them. Capillaries are found around the body, everywhere. High blood pressure causes the capillaries to burst. Bursting capillaries in the brain cause strokes, and bursting capillaries in the kidneys cause kidney failure.
What are the neuralgia that wrap around capillaries helping to form the blood brain barriers?
Astrocytes
Certain capillaries in the brain including the choroid plexus do not have spaces between the cells effectively creating a?
blood-brain barrier (!)
What is formed by a tight network of capillaries that protect the delicate tissue of the CNS?
Blood- brain barrier
What does the Blood Brain Brarrier do?
The blood brain barrier is actually a physical barrier (made of tight junctions of cells/capillaries) that provides a filtering mechanism for the blood carrying stuff to the brain and spinal cord. It only allows certain things to get in and out of the brain and spinal cord.
The smallest and most numerous blood vessels in the human body?
The smallest blood vessels are the capillaries.
That it can lower its head to drink what animal has a series of valves to keep blood from flowing into the brain as well as a protective wondernet of capillaries in the brain itself?
Giraffe
