Nervous system Development

The notochord will form the _________ and is bound laterally by elevations called _________. Then a median groove develops causing the neural folds to fuse forming the ___________.

What is the difference between the mantle zone and the marginal zone?

• Cell bodies of neuroblasts - marginal zone

• Cell bodies of neuroblasts - mantle zone

• Axon and dendrites of neuroblasts - marginal zone

• Axon and dendrites of neuroblasts - mantle zone

The alar plate, basal plate, lateral plate all have different innervations and develop into different horns of the spinal cord. What are they?

• alar plate - sensory - dorsal horn

• basal plate - sensory - lateral horn

• alar plate - motor - ventral horn

• Lateral plate - autonomic - lateral horn

• Basal plate - motor - ventral horn

There are _________ cell columns in the grey matter and they are

• 3

• 4

• somatic afferent

• visceral afferent and visceral efferent

• somatic efferent

The caudal end of the spinal cord tapers to form ____________ and the most _________ spinal nerves pass ________ and this arrangement is called _____________.

• conus medullaris - caudal - laterally - cauda equina

• conus cortex - cranial - laterally - cauda equina

• conus medullaris - caudal - oblique - cauda equina

• conus intermedius - lateral - laterally - cauda equina

What is the pontine flexure?

• between the telencephalon and the metencephalon

• between the metencephalon and the myencephalon

• between the diencephalon and metencephalon

• between the telencephalon and the myelencephalon

What are the three components of the meninges? And the derivatives of these components.

Name the correct abnormalities

• Spina bifida : cranial neuropore fails to close

• Myeloschisis : cleft in the spinal cord

• Cerebellar hypoplasia : larger then normal cerebellum

• Hydrocephalus : excess amount of CSF in the brain ventricles

What are the 2 derivatives of the telencephalon and the correct cavity?

• Olfactory Bulb & cerebral hemispheres

• Thalamus & hypothalamus

• Lateral ventricle

• Third ventricle

What are the cranial nerves associated with the telencephalon?

• second optic nerve

• first olfactory nerve

• oculomotor + trochlear

• 5th or Trigeminal