Mod 8 Flashcards
what does the CNS develop from
thickened area of the ectoderm
what is the thickened area of the ectoderm called
neural plate at 4.5 week LMP
about what day does the cranial end close
38 LMP
about what day does the caudal end close
40 LMP
what is the most common site of neural tube defects
caudal
the rostral end differentes into three vesicles that give rise to the entire brain, what are they
prosencephalon
mesencephalon
rhombencephalon
what is another name for prosencephalon
forebrain
what is another name for mesencephalon
midbrain
what is another name for rhombencephalon
hindbrain
what does the prosencephalon differentiate into
telencephalon
diencephalon
what does the telencephalon form
cerebral hemispheres
what does the diencephalon form
thalamus
hypothalamus
what is the smallest potion of the brain
midbrain
what does the mesencephalon form
cerebral peduncles
where is the location of the mesencephalon
anterior to the aqueduct of Sylvius
what does the rhombencephalon differentiate into
metencephalon
myelencephalon
what does the metencephalon form
cerebellum
pons
where is the pons located
between the midbrain and medulla oblongata
what does the pons connect
cerebrum to the cerebellum
what does the myelencephalon form
medulla oblongata
how far does the medulla oblongata extend
from pons to spinal cord
what does the medulla oblongata do
regulates heart rate and respiratory rhythm and blood pressure
what do the 2 frontal lobes control
personality
voluntary motion
what do the 2 parietal lobes control
peripheral sensory
what do the 2 temporal lobes control
smell
taste
hearing
what do the 2 occipital lobes control
vision
what do the 2 insula lobes control
motor and sensory function of the organs
what is the cerebrums function
controls learned behaviour and personality
what are the ventricles
4 connecting cavites within the cerebral hemispheres and the brain steam
what is the ventricles continous with
spinal cord cavity
what do all the venticle cavities contain
CSF
choroid plexus
what is the foramen of magendi
medial aspect of the 4th ventricle
connects to the spinal cord
what is the foramen of luschka
lateral aspect of the 4th ventricle
connects with the meninges of the brain
what is the lateral venticles
largest ventricles
located in the cerebral hemispheres
each has a body and 3 horns
the juntion of the body, occiptal and temporal horns form what of the ventricle
trigone or atria
where is the 3rd ventricle located
between the thalami and inferior to the corpus callosum
what does the 3rd ventricle communicate with
lateral ventricle via the foramen of monro
4th ventricle via the aqueduct of sylvius
where is the 4th ventricle located
within the brain stem
anterior to the cerebellum
what is the 4th ventricle continuous with
central canal of the spinal cord via the foramen of magendie
what does the 4th ventricle communicate with
subarachnoid spaces of the meninges via the foramen of luschka
