Introduction to neuroanatomy
Terms in this set (35)
What are the two main divisions of the nervous system?
central nervous system (CNS) and the peripheral nervous system (PNS)
what two things make up the central nervous system (CNS)?
brain and spinal cord
What makes up the peripheral nervous system (PNS)?
What are two different types of nerve pathways in the peripheral nervous system (PNS)?
Motor pathways and sensory pathways
What 3 components make up the brain?
cerebrum, cerebellum and brain stem
how many hemispheres does the cerebrum have?
Much of brain function is (ipsilateral/contralateral)?
If I made a cut in a brain that when from the crown of the head to the floor - what would this cut be called?
frontal cut (also known as transverse/coronal cut)
If I were to cut a brain in a way so that the blade moved parallel to the floor - what would this cut be called?
What two other terms is the frontal cut also known as?
Transverse and coronal
If I held the blade vertically and cut a brain straight down the centre - what would this cut be called?
what makes up grey matter in the brain?
cell bodies and dendrites
what makes up white matter in the brain?
what do you call a pathway that connects left and right hemispheres together?
what's the biggest commissure in the brain?
The corpus callosum's name translates to...
What structure does the CNS use to protect itself?
what are the 3 layers of the meninges called?
dura mater, arachnoid membrane, pia mater
What do you call the condition where the meninges becomes inflamed?
What is the name of the clear fluid that the meninges float in?
cerebrospinal fluid (CSF)
The cerebrospinal fluid sits in the ...?
The functions of the cerebrospinal fluid include...
shock absorption, buoyancy, reducing the weight of the brain
How many ventricles are there in total in the ventricular system?
what are the ventricles filled with?
which membrane produces CSF in the lateral ventricles?
What is filtered in the lateral ventricles to produce CSF?
Where is the CSF stored in the ventricle system?
the lateral ventricles
where does the CSF travel after the lateral ventricles in the ventricular system?
where does the CSF travel after the third ventricle in the ventricular system (and what does it pass through to get there)?
the fourth ventricle (via the cerebral aqueduct)
what is the purpose of the ventricular system?
to carry waste away from the brain
What are blood-brain barriers?
blood-brain barriers allow what kind of substances to pass through as they wish?
lipid soluble substances
what kind of substances do the blood-brain barriers not let through easily?
How do larger molecules move past the blood-brain barrier?
they must be actively transported
why do blood-brain barriers keep out larger molecules?
to maintain a stable environment and to protect the brain from dangerous chemicals
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