Question

Astrocytes create the blood–brain barrier to protect the brain. a. True b. False

Answer 1

Astrocytes create the blood–brain barrier to protect the brain. This statement is true.

Further Explanation:

Astrocytes are very particular brain cells presents in the neurons, pericytes and endothelium. The astrocytic end-feet, that is in present very closely to cerebral endothelial cells, helps in providing a structural barrier and thus make a blood brain barrier.

Astrocytes are common glial cell that supports and protect the neurons. They help in the formation of blood brain barrier. Blood brain barrier is a capillary structure that prevents harmful substance in the systemic circulation from entering and diffusing in the brain and spinal cord. Astrocytes are star shaped cells surrounding the neurons in the spinal cord and brain. They maintain and repair nervous tissue and also responsible for the plasticity of the nervous systemThe role for astrocytes in forming blood brain barrier of the cerebral endothelium, as opposed to being a physical barrier. Astrocytes also maintain the homeostasis of ions and water in the brain.

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Answer Details:

Grade: High School

Subject: Biology

Topic: Blood brain barrier

Keywords:

Blood brain barrier, astrocytes, homeostasis, brain, neurons, structure, substance, pericytes, endothelium, end-feet, structural barrier, plasticity, nervous tissue.

Answer 2

The answer is true. They work in conjunction with the bairn endothelial cells to create a semi-permeable blood-brain barrier with tight junctions that only allows certain elements to pass into the brain. They achieve this through astrocytic endfeet in addition to the thick basement membrane.