chapter 13 Flashcards
four major brain regions
cerebrum
dicenephalon
brainstem
cerebellum
how many hemispheres is the cerebrum seperated into
2
how many lobes is brain hemisphere seperated into
5
the outer surface of brain is
folded
gyri of brain is
the ridges
sulci of brain is
depression between ridges; fissures
brain anterior is known as=
rostral
brain posterior=
caudal
inferior to cerbrum and diencephalon is the
brainstem
individual gyri is called a
gyrus
fissures on brain is a
deep sulcus
cells of nervous system include
neurons and neuroglia
neuron cell body with dendritrs attached is called
gray matter
gray matter found in
cortex
superficial (outer) layer of brain
the cortex
consists of axons coming from cell bodies
white matter
white matter gets its white color cause its
mylinated
white matter for cerbrum for the brain is found in
medulla or innermost portion
medulla is the
innermost portion
brain is protected by ____(4)
bone of skull, meninges, cerebral spinal fluid, blood brain barrier
meninges is
layered tissue surrounding brain
cerebral spinal fluid iis like a
liquid cushion
what cell helps with blood brain barrier
astrocytes
blood brain barrier controls
what passes from blood to brain
cranial meninges is composed of
three connective tissue layers
cranial meninges seperate and support _____ tissue of brain
soft
cranial tissues also ____ and ___ blood vessels supplying the brain
enclose and protect
what is cranial meninges relationship with CSF
helps contain and circulate CSF
what are the three layers of meninges
pia maater, arachnoid mater, dura mater
whats the deepest meninge
pia mater
the most superficial meninges
dura mater
order of meninges from deepst to outermost(superficial)
pia mater (deepest)
arachnoid mater(middle)
dura mater(outermost)
pia mater touches the
the brain
pia mater is made of
thin layer of areolar connective tissue
pia mater is also very nutritive for the brain and there are lots of
blood vessels
arachnoid mater
arachnoid mater makes projection that look like spider webs called
arachnoid trabeculae
arachnoid trabeculae extend to
pia mater through subarachnoid space
subarachnoid space contains
cerebrospinal fluis
arachnoid mater is made of
collagen and eleastic fibers
subdural space is potential space that can fill with blood if
a vein is ruptured
dura mater is very
tough
there is a _______ space between dura and skull
epidural
dura mater has _ layers
2
2 layers of dura mater are
meningeal layer (deeper layer)
periosteal layer (superficial layer)
dura mater is made of
dense irregular connective tissue
what forms on internal surface of cranial bones
periosteum
epidural space is also in
spoinal chord
if a pregnant woman gets an epideral it would be in the
epidural space of spinal cord.
epidural space contains
arteries and veins
