Practice Quiz - Development of the Nervous System
|
||||||
|
|
Practice Quiz - Development of the Nervous System |
|||||
|
||||||
postganglionic sympathetic cell bodies
cells of the inferior mesenteric ganglion
adrenal medullary cells
cells of the enteric plexus
all of the above are correct ectoderm endoderm both neither telencephalon diencephalon mesencephalon metencephalon myelencephalon telencephalon diencephalon mesencephalon metencephalon myelencephalon telencephalon diencephalon mesencephalon metencephalon myelencephalon telencephalon diencephalon mesencephalon metencephalon myelencephalon telencephalon diencephalon mesencephalon metencephalon myelencephalon true false true false true false true false true false fiber tracts appear to become myelinated
about the time they start to function all myelination of nerve fibers is by
oligodendroglial cells the first reflexes appear in the caudal region there is no movement of the embryo/fetus
until the 15th week is produced in choroid plexuses circulates in the ventricular system of the
brain and in the subarachnoid spaces re-enters the venous blood at the arachnoid
granulations blockage of its circulation can lead to internal
or external hydrocephalus all of the above are correct there are five primary brain vesicles during the 5th week, each brain vesicle
subdivides into 2 parts the pontine flexure is in a direction opposite
the mesencephalic and cervical flexure neural epithelial cells are found in the
marginal layer the sulcus limitans is found in the
diencephalon the infundibulum is an outgrowth of the
telencephalon that develops into the
neurohypophysis sensory nuclei in the hindbrain lie ventral to
the sulcus limitans the inner ear is derived from surface
ectoderm the neural groove forms from the neural
plate the neural folds are composed of
neuroepithelial cells the neural tube maintains temporary contact
with the amniotic cavity via neuropores neuroepithelial cells give rise to both
neuroblasts and gliablasts all of the above are correct basal plate - sensory neurons mantle layer - neuroblasts marginal layer - gray matter alar plate - choroid plexus a muscle's nerve supply can be used as an
indicator of its level of origin and path of
migration Rathke's pouch is an outgrowth of oral
ectoderm that becomes the anterior lobe of
the hypophysis the sulcus limitans marks the boundary
between motor and sensory areas sensory nuclei in the hindbrain lie ventral to
motor nuclei mesencephalon - colliculi - visual and
auditory reflexes metencephalon - medulla - reflex center telencephalon - thalamus - sensory relay and
integration telencephalon - cerebellum - motor
coordination is accomplished by neurilemma or Schwann
cells in peripheral nerves is accomplished by oligodendroglial cells
within the spinal cord continues after birth is related to function all of the above are correct exhibits decreased accumulation of CSF
within the ventricles or between the brain and
dura mater is accompanied by an excessive amount of
amniotic fluid may be caused by an obstruction of the
aqueduct of Sylvius may be caused by an absence of the choroid
plexuses are often caused by a failure of the neural
tube to close have their inception during the fourth week
of development always occur together in the affected
individual have as their primary cause a defect in
development of bone is due to the failure of the neural tube to
close is often associated with displacement of
medulla and some cerebellum into the
vertebral canal most frequently is located in the cervical cord
region is not related to hydrocephaly is the result of failure of the cephalic part of
the neural tube to form has its inception during the 5th week of
development is seen more frequently in females than in
males is accompanied by a deficiency in amniotic
fluid absence of sympathetic chain ganglia facial malformations absence of adrenal medulla absence of pigment cells all of the above are correct macrocephalus hydrocephalus cranioschisis microcephalus conical cranium cerebellum medulla oblongata both neither cerebellum pons both neither pontine hindbrain cervical cephalic midbrain neural groove cuneate groove sulcus limitans longitudinal groove transverse fold third sacral first sacral third lumbar first lumbar twelfth thoracic olfactory nerve - CN I optic nerve - CN II oculomotor nerve - CN III trochlear nerve - CN IV trigeminal nerve - CN V
abducens nerve - CN VI
facial nerve - CN VII
vestibulocochlear nerve - CN VIII
glossopharyngeal nerve - CN IX
vagus nerve - CN X
accessory nerve - CN XI
hypoglossal nerve - CN XII lateral mesoderm 3rd phalangeal pouch superficial mesoderm neural crest endoderm defective neural crest migration neural tube defect myogenic cell migration defect defective division of somites first trimester second trimester third trimester spinal ganglia pigment cells suprarenal medulla skeletal and muscular components in the head sheaths of peripheral nerves all of the above arise from neural crest L1 L2 L3 L4 L5 L1 L2 L3 L4 L5 neural crest paraxial mesoderm lateral ectoderm endoderm estrogen LDH albumin alpha-fetoprotein (AFP) hCG