Quiz 4/5 Review Flashcards
The lateral longitudinal groove in the inner surface of the developing spinal cord is the:
sulcus limitans
Anteriorly, the 3rd ventricle ends at the?
lamina terminalis
CSF descends down the __________ side of the spinal cord
posterior
Put these structures in order from first to last as used to represent CSF production and flow
-choroid plexus
-lateral ventricle
-3rd ventricle
-4th ventricle
-cerebral aqueduct (sylvius)
-interventricular foramen (monro)
-dural sinus
-subarachnoid space
-choroid plexus
-lateral ventricle
-interventricular foramen (monro)
-3rd ventricle
-cerebral aquaduct (sylvius)
-4th ventricle
-subarachnoid space
-dural sinus
The retina of the eye forms from a diverticulum projecting from the _________________?
diencephalon
Paired passageways associated with the 4th ventricle:
lateral aperture/foramen of luschka
Cisterns are ___________________
subarachnoid spaces
Of the following, the item most closely associated with the pons is:
A) mesencephalon
B) myelencephalon
C) metencephalon
D) diencephalon
C) metencephalon
T/F: neurulation occurs before gastrulation
false
The dural fold that separates the occipital lobe and cerebellum?
tentorium cerebelli
A healthy typical human brain has _______ mL of CSF circulating at any given time
150
T/F: the obex is the rostral limit of the 4th ventricle
false
The wall of the neural tube thickens in which area to produce the basal nuclei?
telencephalon
The area outlined on the image is?
lateral aperture/recess
The area outlined on the image is?
suprapineal recess
CSF can move into dural sinuses via which process?
through arachnoid villi
The region of the lateral ventricle where the body, posterior and inferior horns unite is called the ___________
trigone
Caudal placodes are?
thickenings of neuroectoderm adjacent to the neural crest
What will the neural tube eventually become?
brain and spinal cord
Failure of the caudal end of the neural tube to close results in this condition
spina bifida
Central pathways from GSAs have 3 neurons, the 3rd order neurons always projects to the ____________?
cerebral cortex
Which class of axon would be used to bring info on pH from blood vessels?
GVA
Visceral mechanoreceptors and baroreceptors transmit to the CNS via
GVA
Which type of nerve fiber is subdivided into alpha, beta, delta, and gamma?
A nerve fibers
Peripheral nerves are formed of bundles of axons called ____________, these bundles are wrapped in a _________________
fascicles, perineurium
Dense collagen fibers provide support to the _____________?
epineurium
Light touch, or feeling the wind enters the CNS via GSAs and then ascending via the _______________?
anterior spinothalamic tract
Alpha neurons always innervate _________?
skeletal m.
Which sensory modality is transmitted the fastest?
proprioception
Which classification system came from direct measurements of axonal diameter?
I, II, III, and IV
Only 4 of the 12 cranial nerves contain GVE fibers. These are CN III, ______, ______, and ________
VII, IX, X
Arrange these fibers in order from fastest conduction to slowest:
-small diameter unmyelinated
-large diameter myelinated
-medium myelinated
-small diameter myelinated
-large diameter myelinated
-medium myelinated
-small diameter myelinated
-small diameter unmyelinated
Pain and temp are transmitted from cutaneous receptors to the cortex via?
spinothalamic tract
T/F: C fibers are always unmyelinated
true
The telencephalon starts as 2 swellings connected medially by a thin membrane called the?
lamina terminalis
The brain flexure which develops between the metencephalon and the myelencephalon is called the:
pontine
T/F: the basal plate forms the sensory neurons
false
The spinal cord develops from the:
caudal neural tube
T/F: the medulla and cerebellum form from the same secondary vesicle
false
The choroid plexus is a 3 layer tissue. What describes the 2nd layer?
scattered pial cells
The type of blood vessel located within the choroid plexus is:
fenestrated capillaries
The glial cell associated with the choroid plexus:
ependymal cells
T/F: hormones and chemical signals can travel within CSF
true
CSF within sinuses drains next into?
jugular veins
CSF crosses the membrane of the villi. Villi are formed by?
arachnoid mater
