PSB 3002 Exam 1 Questions & Answers 2024/2025
layers of the meninges - ANSWERSdurma mater, arachnoid membrane, and pia mater
cerebrospinal fluid - ANSWERSclear fluid that fills the ventricular system of the brain and the subarachnoid space surrounding the brain and spinal cord
neuroaxis ...
layers of the meninges - ANSWERSdurma mater, arachnoid membrane, and pia mater
cerebrospinal fluid - ANSWERSclear fluid that fills the ventricular system of the brain and the
subarachnoid space surrounding the brain and spinal cord
neuroaxis - ANSWERSimaginary line drawn through the length of the central nervous system
anterior - ANSWERSnear or toward head
posterior - ANSWERSnear or toward tail
rostral - ANSWERStoward nose and mouth
dorsal - ANSWERStoward back
ventral - ANSWERStoward belly
lateral - ANSWERStoward side
medial - ANSWERStoward middle
ipsilateral - ANSWERSstructures on same side of body
contralateral - ANSWERSstructures on opposite side of body
,cross section - ANSWERSslice taken at right angles to neuraxis (frontal sections when discussing brain)
horizontal section - ANSWERSparallel to the ground
sagittal section - ANSWERSslice parallel to neuraxis and perpendicular to ground
midsagittal plane - ANSWERScuts brain into two symmetrical halves
meninges - ANSWERSthree layers of tissue that encase the CNS
protective sheaths
dura mater - ANSWERSouter layer of meninges
durable, thick, tough and flexible but unstretchable
arachnoid membrane - ANSWERSmiddle layer of meninges
soft and spongy
pia mater - ANSWERSclosely attached to brain and spinal cord
smaller blood vessels contained within it
subarachnoid space - ANSWERSgap between pia mater and subarachnoid membrane
filled with cerebrospinal fluid
ventricle - ANSWERSone of the hollow spaces within the brain, filled with cerebrospinal fluid
lateral ventricles - ANSWERSlargest
located in the center of the telencephalon
third ventricle - ANSWERSlocated in center of diencephalon
, walls divide brain in half
cerebral aqueduct - ANSWERSa long tube connecting third and fourth ventricles together
located in center of mesencephalon
fourth ventricle - ANSWERSlocated between cerebellum and the dorsal pons in the center of
mesencephalon
arachnoid granulation - ANSWERSsmall projections of the arachnoid membrane through dura mater into
superior sagittal sinus
CSF flows through them to be reabsorbed into the blood supply
superior sagittal sinus - ANSWERSa blood vessel that drains into the veins serving the brain
obstructive hydrocephalus - ANSWERScondition in which all or some of the brain's ventricles are
enlarged
caused by an obstruction that impedes normal flow of CSF
process of brain development - ANSWERSectoderm thickens and curls forming a plate. continues to curl
and forms ridges that connect into neural tube. by end, tube is closed and has three chambers inside.
three chambers become ventricles
neural tube - ANSWERShollow tube, closed at the rostral end, that forms from ectodermal tissue early in
embryonic development
origin of CNS
cerebral cortex - ANSWERSoutermost layer of gray matter of cerebral hemisphere
larger in humans than in any other species
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Bensuda. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
