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What components contribute to the blood brain barrier?

Looks at the histology of the spinal cord in the picture. What section of the spinal cord is this image from? [A]

Ventral horns receive sensory information and process that to send to the brain.

Which part(s) of the brain listed below are NOT involved in any emotions?

If I was listening to a Spanish lesson to learn the language, which lobe of my brain would be involved in learning the information the most?

For this question, identify only the structure asked for in each question using the diagram. Identify the structure labeled Q. [Q] Identify the structure labeled L. [L] Identify the part of the brain labeled J. [J]  

Megan was being chased by a dog.  She was running and was very scared.  She could hear the dog barking getting closer and closer to her.  She turned her head and saw the dog right behind her. Which cranial nerve is involved in hearing the dog bark? [A] Which cranial nerve allow her to turn her head? [B] Which cranial nerve allows her to recognize it is a dog chasing her? [C]

An epidural is given only below the L3 vertebrae so that no injury to the spinal cord can occur since it has to penetrate into the cerebrospinal fluid within the arachnoid layer of the meninges.

A spinal tap (lumbar puncture) is administered only below the L3 vertebrae so that no injury to the spinal cord can occur since it has to penetrate into the cerebrospinal fluid within the arachnoid layer of the meninges.

Which part of the brain is not considered part of the diencephalon?