Test 1 #3 Flashcards
The cerebellum contains (3)
cortex
white matter
subcortical nuclei
The ______ is composed of the pons and the cerebellum
metencephalon
Part of the rhombencephalon that does not expand forms (3)
medulla
pyramid
dorsal column
Forebrain, midbrain, and hindbrain are called _____
primary vesicles
Secondary vesicles appear around the ____ week
5-6th
______ is classified as both primary and seconday
Mesencephalon
Bends in the brain are called _____
flexures
_____ & _____ flexures are called primary flexures and the ____ flexure is callled seconday
cervical, cephalic, pontine
The primary flexures occur in the _____ week
early 4th
Cervical flexure is between the ____ & _____
medulla, spinal cord
Cephalic flexure is between _____ & ______
prosencephalon, midbrain
Both cephalic and cervical flexure are located on the _____ side, which is concave _____
ventral, ventrally
Pontine flexure occurs at the ____ week
end of 4th beginning of 5th
Pontine flexure is located on the ____ side, and is concave _____
dorsal, dorsally
Pontine flexure forms the _____ and is located between _____ & _____
rhomboid fossa, pons/medulla, cerebellum
______ grows laterally and forms both the lateral ventricles
Telencephalon
____ makes the 3rd ventricle
Diencephalon
Mesencephalon makes up the walls of the _____ and connects the ___ & _____ ventricles
cerebral acqueducts, 3rd, 4th
Metencephalon makes up the walls of the ____ ventricle at the _____
4th , pontine flexure
There is very little CSF in the _____
central canal
Neural crest cells are ____ and make the _____
migratory, PNS
With the neural tube the motor structures are in the ___ plate and it is located on the _____ side. The sensory structures are in the ___ palte and it is located on the _____ side
basal plate, ventral, alar plate, dorsal
The groove between the alar and basal plate is called the ______
sulcus limitans
In the midbrain the motor structures are ____ and the sensory structures are _____
medial, lateral
With cell development in the spinal cord, the neural tube divides into 3 zones
Ventricular (inner)
Intermediate
Marginal(outer)
Innermost(ventricular) zone has (4) cells
immature cell
germ cell
stem cell
neuroepithelial cells
Intermediate zone has (2)
neuroblasts
glioblast
The marginal(outer) zone has (2)
mature neuron
mature glial cells
Brain and spinal cord are surrounded by connective tissue layers (3)
Dura Mater
Arachnoid Mater
Pia Mater
____ mater is the outer layer, _____ mater is the whispy middle layer, and _____ mater is the layer to brain and spinal cord
Dura, arachnoid, pia
Brain stem and spinal cord both have all 3, the difference is the ______
arrangement
Cranial dura has 2 layers
Periosteal
Meningeal
The _____ layer is highly vascular, the _____ layer has no blood supply
Periosteal, Meningeal
The space between the 2 cranial dura layers are _____ and they act like veins
sinuses
The cranial dura is innervated by (2)
C1-C3 sensory dorsal roots
Trigeminal root
Folds of the meningeal layer (3)
Falx cerebri
Tentorium cerebelli
Falx cerebelli
____ is between the 2 hemispheres of the cerebrum
Falx cerebri
______ is between the cerebellum and cerebrum
Tentorium cerebelli
_____ is between the 2 hemispheres of the cerebellum
Falx cerebelli
The cranial arachnoid has fibers from the main membrane to the pia mater called ______
trabeculae
The cranial arachnoid suspends the brain in _____
CSF
Space between the dura and arachnoid space is called _____
subdural space
Large area of space, or pouch, of the arachnoid is called the arachnoid ______
cistern
The _____ cistern is largest between end of spinal cord and dura mater
lumbar
The arachnoid ______ is found within the sinus and the area where CSF is released into the sinus
granulation
Cranial pia is tightly attached to the _____
brain
Spinal dura mater has 1 layer, the _____
meningeal layer
Between the bone, perosteum and the meningeal layer is the _____
epidural fat pad
A plexus of _____ separates the epidural fat pad from vertebral periosteum
veins
The dura surrounding the spinal cord is called the _____, and ends at vertebral level ______
dural sac, S2
