CHAPTER 13 Flashcards
4 major brain regions
cerebrum, dienchephalon, brainstem, cerebellum
gyri
ridges
sulci
depressions between ridges
terms used for anterior and posterior with regards to the nervous system
rostral, caudal
gray matter is made of
neuron cell bodies, dendrites, and unmyelinated axons
Cortex
superficial layer of gray matter
True or false? white matter consists of myelinated axons
true
bundles of axons
tracts
regions of gray matter (clusters of cell bodies) either close to the surface or deep within the brain
nucleus
brain is protected by
bone of skull, meninges, csf, liquid cushion, blood-brain barrier
cranial meninges from deep to superficial
pia mater, arachnoid mater, dura mater
innermost of the meninges, adheres to brain’s surface. thin layer of areolar connective tissue
pia mater
component of arachnoid mater extending to pia mater through the subarachnoid space
arachnoid trabeculae
What is found in the subarachnoid space?
csf
epidural space
potential space between dura and skull
What do dural venous sinuses do?
drain blood from the brain
what type of tissue comprises the dura mater?
dense irregular connective tissue
Which happens more slowly, an epidural hematoma, or a subdural hematoma?
the subdural hematoma happens faster
encephalitis vs menigitis
meningitis is inflammation of the meninges and usually bacterial.
encephalitis is inflammation of the brain and is usually viral
ventricles of brain are lined with what type of cell?
ependymal
What separates the 2 lateral ventricles of the brain?
septum pellucidum
What connects the third ventricle to each later ventricle?
the interventricular foramen
How is the fourth ventricle connected to the third?
cerebral aqueduct
Where are the two lateralventricles of the brain?
cerebrum
Where is the third ventricle of the brain?
middle of diencephalon
Where is the fourth ventricle of the brain?
between the pons and cerebellum
Which ventricle of the brain merges with the central canal of the spinal cord?
fourth
functions of CSF
buoyancy, protection, environmental stability
CSF is formed by ___ in each ventricle
choroid plexus
what causes hydrocephalus
excessive CSF
the cerebrum is the center of
all complex intellectual functions