Formation of the Neural Tube and Fate of the Germ Layers

3-4 weeks of development

how many weeks does major tissue and organs differentiate

neuroectoderm

epithelia above the notochord

neural fold

folding of the neuroectoderm is called?

neural groove

this groove or pit is formed due to the folding

invaginates inside

movement of neural fold

tube like structure which eventually closes

the invagination of the neural fold results to?

neural crest cells

tasked to form the neuroectoderm

floor plate

region above the notochord

roof plate

region above the neural tube

middle, rostral, caudal

neural tube folding starts from the ____ part and spreads in ___ and ___direction part

sosmites

mesodermal tissue, forms along the side of side of the tube

neural crest cells

found above the tube, forms several populations

neural tube

gives rise to CNS; the brain and spinal cord

neural crest

gives rise to PNS

central nervous system

processes info to and from the PNS and is the main network of coordination and control of the entire body

peripheral nervous system

motor and sensory nerves and ganglia outside the brain and spinal cord

neural crest cells

group of cells that separate from the neuroectoderm

migrate and differentiate within the developing embryo

neural crest cells has the capacity to?

- Spinal sensory ganglia
- Sympathetic neurons
- Schwann cells
- Pigment cells
- Meninges

structures derived from neural crest cells

development of face and teeth

in dental context, proper migration of neural crest cells is essential for the _______?

neural crest in the head

have an important role in assisting the formation of the cranial sensory ganglia

neural crest in the head

differentiate to form most of the connective tissue of the head

assisting the formation of the cranial sensory ganglia

neural crest in the head have an important role in?

most of the connective tissue of the head

neural crest cells in the head differentiate to form?

Ectomesenchyme

embryonic connect tissues found in the head is called?

mesoderm

ectomesenchyme is derived from?

mesenchyme

embryonic connective tissue found elsewhere (not in the head) is called?

neuroectoderm

origin of mesenchyme

mesoderm

mesenchyme is derived from?