BIOL 223 Chapter 14-1
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What names are given to the folds and grooves on the surface of the cerebral cortex?
- gyri - folds
- sulci - grooves
What is the purpose of the folds and grooves on the surface of the cerebral cortex?
to increase surface area allowing for more information storage and processing
The subdivisions of the cerebrum which loosely correspond to the bones of the skull are called:
List the three meningeal layers in order from outside to inside.
- dura mater
- arachnoid mater
- pia mater
Dura mater is comprised of which type of tissue?
dense fibrous connective tissue
Arachnoid mater is comprised of which types of fibers?
collagen and elastic
Where would you find the endosteal layer of the dura mater?
on the outer surface adhereing to the cranial bones
The space where blood that flows through the brain is returned to circulation is known as the:
The innermost layer of the dura mater is known as the:
Where will you find the subarachnoid space?
just beneath the arachnoid membrane
What is the purpose of the arachnoid space?
it is where the cerebrospinal fluid flows
The pia mater sticks to the brain surface by means of cells called:
What type of cells form the blood-brain barrier?
What is the purpose of the blood-brain barrier?
to create a permeability barrier which regulates which substances are able to move from the blood into the brain
True or False: Glucose can be moved into the brain by means of active transport.
True or False: Proteins and antibiotics can cross into the brain by means of diffusion.
False - proteins and antibiotics cannot cross the blood-brain barrier
How will lipid soluble compounds cross the blood-brain barrier?
by means of diffusion
What type of cells synthesize the cerebrospinal fluid?
The cerebrospinal fluid, or CSF, is synthesized in the:
List the three functions of the CSF discussed in class.
- mechanical protection
- homeostatic regulation
List the pathway that CSF will travel through the CNS.
lateral ventricles - 3rd ventricle - 4th ventricle - subarachnoid space - down the spinal cord - back up to the brain
What two structures are connected by the cerebral aquaduct?
the 3rd and 4th ventricles
Where does old CSF get recycled?
in the arachnoid villi
Cerebrospinal fluid is comprised mostly of:
List the four elements/compounds found in the CSF discussed in class.
- carbon dioxide
Peduncles in the brain function as:
To what three brain structures do the superior cerebellar peduncles connect the cerebellum to?
The middle cerebellar peduncle links the cerebellum to the:
The inferior cerebellar peduncle links the cerebellum with what two brain structures?
- medulla oblongata
- spinal cord
The connective pathway that connects the anterior part of the midbrain to the cerebrum is known as the:
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