Brain and Cranial Nerves

 

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

 

human_brain_major_internal_parts.jpg

 

 

Gray and White Matter

Cortex

Superficial layer

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

Medulla

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?
 
 
 
 
 

 

Meninges

Layers of connective tissue for protection of the brain

 

dura mater.gif

   

 

Ventricles

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.

 

brain-ventricles.gif

 

 

 Hyperlink to Ordering Activity

 

Cerebrospinal Fluid  

 

 Toggle open/close quiz question

 

 

 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

 

 Toggle open/close quiz question

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