Brain and Cranial Nerves


 The human brain is the most sophisticated brain compared to other species.





Gray and White Matter


Superficial layer

Composed of gray matter - site of neuron cell bodies, dendrites and synapses


Deep to cortex

Composed of white matter - composed primarily of tracts or bundles of myelinated axons, which connect one part of the brain to another and to the spinal cord


Which of the following components is not part of the brainstem?



Layers of connective tissue for protection of the brain


dura mater.gif




Several large 'spaces' filled with cerebrospinal fluid (CSF). CSF forms a liquid cushion in and around the brain and spinal cord that is constantly drained and replaced.





 Hyperlink to Ordering Activity


Cerebrospinal Fluid  


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 Blood-Brain Barrier

Seals nearly all of the blood capillaries throughout the brain tissue.

Important protective device

Highly permeable to water, glucose, lipid-soluble substances such as oxygen and carbon dioxide, and drugs such as alcohol, caffeine, nicotine, and anesthetics.

Place the following components in order from internal to external layers of the brain


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Put the items in the correct order.
Below is a sequence of events. Place them in the order they should occur, number 1 being the first item. Select the step number from the drop down next to each item.
Items to order:
1. Subarachanoid space
2. Pia mater
3. Arachanoid mater
4. Dura mater