chapter 60 part 3 Flashcards
indentations in the skull base
fossa
fossa that contains the frontal lobe
anterior fossa
fossa that contains the temporal lobe
middle fossa
fossa that contains the cerebellum and brain stem
posterior fossa
fibrous connective TISSUE that COVER THE brain and spinal cord
meninges
provide protection, support, and nourishment to the brain and spinal cord
meninges
layers of the meninges are the:
dura mater
arachnoid
pia mater
the outermost layer of meninges
dura mater
TOUGH, THICK, inelastic, fibrous, and GRAY meninges
dura mater
the middle membrane of meninges
arachnoid
extremely THIN, delicate membrane that closely RESEMBLES A SPIDER WEB
arachnoid
this meninges has cerebrospinal fluid (CSF) in the space below it
arachnoid
unique finger-like projections that absorb CSF into the venous system
arachnoid villi
the innermost, thin, transparent layer that hugs the brain closely and extends into every fold of the brain’s surface
pia mater
clear and colorless fluid that is produced in the choroid plexus of the ventricles and circulates around the surface of the brain and the spinal cord
cerebrospinal fluid
cerebrospinal fluid is produced at a rate of about ____ mL/day
500 ml per day
cerebrospinal fluid may be obtained through a
lumbar puncture
blockage of the flow of CSF anywhere in the ventricular system
obstructive hydrocephalus
the reason why the CNS is inaccessible to many substances that circulate in the blood plasma
blood-brain barrier
a semi-permeable membrane that protects the brain and central nervous system (CNS) from harmful substances
blood-brain barrier
the connection between the brain and the periphery
spinal cord
what part of the meninges cover brain and spinal cord
dura mater
a tube of nerve tissue that runs from the brain to the lower back, carrying signals between the brain and the rest of the body
spinal cord
what is the length of spinal cord
45 cm (18 inches)
NERVE ROOTS that extend beyond the conus
cauda equina
H shaped structure of gray matter
lateral horn
how many are the vertebral column
33
what consists of the vertebral column:
12 thoracic
7 sacral
5 lumbar
5 sacral
4 coccygeal
how many are the pairs of cranial nerve?
12
what are the 12 cranial nerves
OLFACTORY
OPTIC
OCCULOMOTOR
TROCHLEAR
TRIGEMINAL
ABDUCENS
FACIAL
VERTIBULOCOCHLEAR
GLOSSOPHARYNGEAL
VAGUS
ACCESSORY
HYPOGLOSSAL
the brain receives ___ % of the cardiac output or ____ ml/min
15%
750 ml